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| author | Charles Cabergs <me@cacharle.xyz> | 2020-07-27 10:05:23 +0200 |
|---|---|---|
| committer | Charles Cabergs <me@cacharle.xyz> | 2020-07-27 10:05:23 +0200 |
| commit | 5bf66662a9bdd62c5bccab15e607cd95cfb8fcab (patch) | |
| tree | 39a1a4629749056191c05dfd899f931701b7acf3 /srcs/phpmyadmin/doc/html/_sources/faq.txt | |
| parent | 5afd237bbd22028b85532b8c0b3fcead49a00764 (diff) | |
| download | ft_server-master.tar.gz ft_server-master.tar.bz2 ft_server-master.zip | |
Removed wordpress and phpmyadmin, my server doesn't handle it well and it brings shame on my famillyHEADmaster
Diffstat (limited to 'srcs/phpmyadmin/doc/html/_sources/faq.txt')
| -rw-r--r-- | srcs/phpmyadmin/doc/html/_sources/faq.txt | 2290 |
1 files changed, 0 insertions, 2290 deletions
diff --git a/srcs/phpmyadmin/doc/html/_sources/faq.txt b/srcs/phpmyadmin/doc/html/_sources/faq.txt deleted file mode 100644 index fbd1cc6..0000000 --- a/srcs/phpmyadmin/doc/html/_sources/faq.txt +++ /dev/null @@ -1,2290 +0,0 @@ -.. _faq: - -FAQ - Frequently Asked Questions -================================ - -Please have a look at our `Link section -<https://www.phpmyadmin.net/docs/>`_ on the official -phpMyAdmin homepage for in-depth coverage of phpMyAdmin's features and -or interface. - -.. _faqserver: - -Server -++++++ - -.. _faq1_1: - -1.1 My server is crashing each time a specific action is required or phpMyAdmin sends a blank page or a page full of cryptic characters to my browser, what can I do? ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- - -Try to set the :config:option:`$cfg['OBGzip']` directive to ``false`` in your -:file:`config.inc.php` file and the ``zlib.output_compression`` directive to -``Off`` in your php configuration file. - -.. _faq1_2: - -1.2 My Apache server crashes when using phpMyAdmin. ---------------------------------------------------- - -You should first try the latest versions of Apache (and possibly MySQL). If -your server keeps crashing, please ask for help in the various Apache support -groups. - -.. seealso:: :ref:`faq1_1` - -.. _faq1_3: - -1.3 (withdrawn). ----------------- - -.. _faq1_4: - -1.4 Using phpMyAdmin on IIS, I'm displayed the error message: "The specified CGI application misbehaved by not returning a complete set of HTTP headers ...". -------------------------------------------------------------------------------------------------------------------------------------------------------------- - -You just forgot to read the *install.txt* file from the PHP -distribution. Have a look at the last message in this `PHP bug report #12061 -<https://bugs.php.net/bug.php?id=12061>`_ from the official PHP bug -database. - -.. _faq1_5: - -1.5 Using phpMyAdmin on IIS, I'm facing crashes and/or many error messages with the HTTP. ------------------------------------------------------------------------------------------ - -This is a known problem with the PHP :term:`ISAPI` filter: it's not so stable. -Please use instead the cookie authentication mode. - -.. _faq1_6: - -1.6 I can't use phpMyAdmin on PWS: nothing is displayed! --------------------------------------------------------- - -This seems to be a PWS bug. Filippo Simoncini found a workaround (at -this time there is no better fix): remove or comment the ``DOCTYPE`` -declarations (2 lines) from the scripts :file:`libraries/Header.class.php` -and :file:`index.php`. - -.. _faq1_7: - -1.7 How can I gzip a dump or a CSV export? It does not seem to work. --------------------------------------------------------------------- - -This feature is based on the ``gzencode()`` -PHP function to be more independent of the platform (Unix/Windows, -Safe Mode or not, and so on). So, you must have Zlib support -(``--with-zlib``). - -.. _faq1_8: - -1.8 I cannot insert a text file in a table, and I get an error about safe mode being in effect. ------------------------------------------------------------------------------------------------ - -Your uploaded file is saved by PHP in the "upload dir", as defined in -:file:`php.ini` by the variable ``upload_tmp_dir`` (usually the system -default is */tmp*). We recommend the following setup for Apache -servers running in safe mode, to enable uploads of files while being -reasonably secure: - -* create a separate directory for uploads: :command:`mkdir /tmp/php` -* give ownership to the Apache server's user.group: :command:`chown - apache.apache /tmp/php` -* give proper permission: :command:`chmod 600 /tmp/php` -* put ``upload_tmp_dir = /tmp/php`` in :file:`php.ini` -* restart Apache - -.. _faq1_9: - -1.9 (withdrawn). ----------------- - -.. _faq1_10: - -1.10 I'm having troubles when uploading files with phpMyAdmin running on a secure server. My browser is Internet Explorer and I'm using the Apache server. ----------------------------------------------------------------------------------------------------------------------------------------------------------- - -As suggested by "Rob M" in the phpWizard forum, add this line to your -*httpd.conf*: - -.. code-block:: apache - - SetEnvIf User-Agent ".*MSIE.*" nokeepalive ssl-unclean-shutdown - -It seems to clear up many problems between Internet Explorer and SSL. - -.. _faq1_11: - -1.11 I get an 'open\_basedir restriction' while uploading a file from the import tab. -------------------------------------------------------------------------------------- - -Since version 2.2.4, phpMyAdmin supports servers with open\_basedir -restrictions. However you need to create temporary directory and configure it -as :config:option:`$cfg['TempDir']`. The uploaded files will be moved there, -and after execution of your :term:`SQL` commands, removed. - -.. _faq1_12: - -1.12 I have lost my MySQL root password, what can I do? -------------------------------------------------------- - -phpMyAdmin does authenticate against MySQL server you're using, so to recover -from phpMyAdmin password loss, you need to recover at MySQL level. - -The MySQL manual explains how to `reset the permissions -<https://dev.mysql.com/doc/refman/5.7/en/resetting-permissions.html>`_. - -If you are using MySQL server installed by your hosting provider, please -contact their support to recover the password for you. - -.. _faq1_13: - -1.13 (withdrawn). ------------------ - -.. _faq1_14: - -1.14 (withdrawn). ------------------ - -.. _faq1_15: - -1.15 I have problems with *mysql.user* column names. ----------------------------------------------------- - -In previous MySQL versions, the ``User`` and ``Password`` columns were -named ``user`` and ``password``. Please modify your column names to -align with current standards. - -.. _faq1_16: - -1.16 I cannot upload big dump files (memory, HTTP or timeout problems). ------------------------------------------------------------------------ - -Starting with version 2.7.0, the import engine has been re–written and -these problems should not occur. If possible, upgrade your phpMyAdmin -to the latest version to take advantage of the new import features. - -The first things to check (or ask your host provider to check) are the values -of ``max_execution_time``, ``upload_max_filesize``, ``memory_limit`` and -``post_max_size`` in the :file:`php.ini` configuration file. All of these -settings limit the maximum size of data that can be submitted and handled by -PHP. Please note that ``post_max_size`` needs to be larger than -``upload_max_filesize``. There exist several workarounds if your upload is too -big or your hosting provider is unwilling to change the settings: - -* Look at the :config:option:`$cfg['UploadDir']` feature. This allows one to upload a file to the server - via scp, FTP, or your favorite file transfer method. PhpMyAdmin is - then able to import the files from the temporary directory. More - information is available in the :ref:`config` of this document. -* Using a utility (such as `BigDump - <https://www.ozerov.de/bigdump/>`_) to split the files before - uploading. We cannot support this or any third party applications, but - are aware of users having success with it. -* If you have shell (command line) access, use MySQL to import the files - directly. You can do this by issuing the "source" command from within - MySQL: - - .. code-block:: mysql - - source filename.sql; - -.. _faq1_17: - -1.17 Which Database versions does phpMyAdmin support? ------------------------------------------------------ - -For `MySQL <https://www.mysql.com/>`_, versions 5.5 and newer are supported. -For older MySQL versions, our `Downloads <https://www.phpmyadmin.net/downloads/>`_ page offers older phpMyAdmin versions -(which may have become unsupported). - -For `MariaDB <https://mariadb.org/>`_, versions 5.5 and newer are supported. - -.. _faq1_17a: - -1.17a I cannot connect to the MySQL server. It always returns the error message, "Client does not support authentication protocol requested by server; consider upgrading MySQL client" ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- - -You tried to access MySQL with an old MySQL client library. The -version of your MySQL client library can be checked in your phpinfo() -output. In general, it should have at least the same minor version as -your server - as mentioned in :ref:`faq1_17`. This problem is -generally caused by using MySQL version 4.1 or newer. MySQL changed -the authentication hash and your PHP is trying to use the old method. -The proper solution is to use the `mysqli extension -<https://www.php.net/mysqli>`_ with the proper client library to match -your MySQL installation. More -information (and several workarounds) are located in the `MySQL -Documentation <https://dev.mysql.com/doc/refman/5.7/en/common-errors.html>`_. - -.. _faq1_18: - -1.18 (withdrawn). ------------------ - -.. _faq1_19: - -1.19 I can't run the "display relations" feature because the script seems not to know the font face I'm using! --------------------------------------------------------------------------------------------------------------- - -The :term:`TCPDF` library we're using for this feature requires some special -files to use font faces. Please refers to the `TCPDF manual -<https://tcpdf.org/>`_ to build these files. - -.. _faqmysql: - -1.20 I receive an error about missing mysqli and mysql extensions. ------------------------------------------------------------------- - -To connect to a MySQL server, PHP needs a set of MySQL functions -called "MySQL extension". This extension may be part of the PHP -distribution (compiled-in), otherwise it needs to be loaded -dynamically. Its name is probably *mysqli.so* or *php\_mysqli.dll*. -phpMyAdmin tried to load the extension but failed. Usually, the -problem is solved by installing a software package called "PHP-MySQL" -or something similar. - -There are currently two interfaces PHP provides as MySQL extensions - ``mysql`` -and ``mysqli``. The ``mysqli`` is tried first, because it's the best one. - -This problem can be also caused by wrong paths in the :file:`php.ini` or using -wrong :file:`php.ini`. - -Make sure that the extension files do exist in the folder which the -``extension_dir`` points to and that the corresponding lines in your -:file:`php.ini` are not commented out (you can use ``phpinfo()`` to check -current setup): - -.. code-block:: ini - - [PHP] - - ; Directory in which the loadable extensions (modules) reside. - extension_dir = "C:/Apache2/modules/php/ext" - -The :file:`php.ini` can be loaded from several locations (especially on -Windows), so please check you're updating the correct one. If using Apache, you -can tell it to use specific path for this file using ``PHPIniDir`` directive: - -.. code-block:: apache - - LoadFile "C:/php/php5ts.dll" - LoadModule php5_module "C:/php/php5apache2_2.dll" - <IfModule php5_module> - PHPIniDir "C:/PHP" - <Location> - AddType text/html .php - AddHandler application/x-httpd-php .php - </Location> - </IfModule> - -In some rare cases this problem can be also caused by other extensions loaded -in PHP which prevent MySQL extensions to be loaded. If anything else fails, you -can try commenting out extensions for other databses from :file:`php.ini`. - -.. _faq1_21: - -1.21 I am running the CGI version of PHP under Unix, and I cannot log in using cookie auth. -------------------------------------------------------------------------------------------- - -In :file:`php.ini`, set ``mysql.max_links`` higher than 1. - -.. _faq1_22: - -1.22 I don't see the "Location of text file" field, so I cannot upload. ------------------------------------------------------------------------ - -This is most likely because in :file:`php.ini`, your ``file_uploads`` -parameter is not set to "on". - -.. _faq1_23: - -1.23 I'm running MySQL on a Win32 machine. Each time I create a new table the table and column names are changed to lowercase! ------------------------------------------------------------------------------------------------------------------------------- - -This happens because the MySQL directive ``lower_case_table_names`` -defaults to 1 (``ON``) in the Win32 version of MySQL. You can change -this behavior by simply changing the directive to 0 (``OFF``): Just -edit your ``my.ini`` file that should be located in your Windows -directory and add the following line to the group [mysqld]: - -.. code-block:: ini - - set-variable = lower_case_table_names=0 - -.. note:: - - Forcing this variable to 0 with --lower-case-table-names=0 on a - case-insensitive filesystem and access MyISAM tablenames using different - lettercases, index corruption may result. - -Next, save the file and restart the MySQL service. You can always -check the value of this directive using the query - -.. code-block:: mysql - - SHOW VARIABLES LIKE 'lower_case_table_names'; - -.. seealso:: `Identifier Case Sensitivity in the MySQL Reference Manual <https://dev.mysql.com/doc/refman/5.7/en/identifier-case-sensitivity.html>`_ - -.. _faq1_24: - -1.24 (withdrawn). ------------------ - -.. _faq1_25: - -1.25 I am running Apache with mod\_gzip-1.3.26.1a on Windows XP, and I get problems, such as undefined variables when I run a SQL query. ----------------------------------------------------------------------------------------------------------------------------------------- - -A tip from Jose Fandos: put a comment on the following two lines in -httpd.conf, like this: - -.. code-block:: apache - - # mod_gzip_item_include file \.php$ - # mod_gzip_item_include mime "application/x-httpd-php.*" - -as this version of mod\_gzip on Apache (Windows) has problems handling -PHP scripts. Of course you have to restart Apache. - -.. _faq1_26: - -1.26 I just installed phpMyAdmin in my document root of IIS but I get the error "No input file specified" when trying to run phpMyAdmin. ----------------------------------------------------------------------------------------------------------------------------------------- - -This is a permission problem. Right-click on the phpmyadmin folder and -choose properties. Under the tab Security, click on "Add" and select -the user "IUSR\_machine" from the list. Now set his permissions and it -should work. - -.. _faq1_27: - -1.27 I get empty page when I want to view huge page (eg. db\_structure.php with plenty of tables). --------------------------------------------------------------------------------------------------- - -This was caused by a `PHP bug <https://bugs.php.net/bug.php?id=21079>`_ that occur when -GZIP output buffering is enabled. If you turn off it (by -:config:option:`$cfg['OBGzip']` in :file:`config.inc.php`), it should work. -This bug will has been fixed in PHP 5.0.0. - -.. _faq1_28: - -1.28 My MySQL server sometimes refuses queries and returns the message 'Errorcode: 13'. What does this mean? ------------------------------------------------------------------------------------------------------------- - -This can happen due to a MySQL bug when having database / table names -with upper case characters although ``lower_case_table_names`` is -set to 1. To fix this, turn off this directive, convert all database -and table names to lower case and turn it on again. Alternatively, -there's a bug-fix available starting with MySQL 3.23.56 / -4.0.11-gamma. - -.. _faq1_29: - -1.29 When I create a table or modify a column, I get an error and the columns are duplicated. ---------------------------------------------------------------------------------------------- - -It is possible to configure Apache in such a way that PHP has problems -interpreting .php files. - -The problems occur when two different (and conflicting) set of -directives are used: - -.. code-block:: apache - - SetOutputFilter PHP - SetInputFilter PHP - -and - -.. code-block:: apache - - AddType application/x-httpd-php .php - -In the case we saw, one set of directives was in -``/etc/httpd/conf/httpd.conf``, while the other set was in -``/etc/httpd/conf/addon-modules/php.conf``. The recommended way is -with ``AddType``, so just comment out the first set of lines and -restart Apache: - -.. code-block:: apache - - #SetOutputFilter PHP - #SetInputFilter PHP - -.. _faq1_30: - -1.30 I get the error "navigation.php: Missing hash". ----------------------------------------------------- - -This problem is known to happen when the server is running Turck -MMCache but upgrading MMCache to version 2.3.21 solves the problem. - -.. _faq1_31: - -1.31 Which PHP versions does phpMyAdmin support? ------------------------------------------------- - -Since release 4.5, phpMyAdmin supports only PHP 5.5 and newer. Since release -4.1 phpMyAdmin supports only PHP 5.3 and newer. For PHP 5.2 you can use 4.0.x -releases. - -PHP 7 is supported since phpMyAdmin 4.6, PHP 7.1 is supported since 4.6.5, -PHP 7.2 is supported since 4.7.4. - -HHVM is supported up to phpMyAdmin 4.8. - -Since release 5.0, phpMyAdmin supports only PHP 7.1 and newer. - -.. _faq1_32: - -1.32 Can I use HTTP authentication with IIS? --------------------------------------------- - -Yes. This procedure was tested with phpMyAdmin 2.6.1, PHP 4.3.9 in -:term:`ISAPI` mode under :term:`IIS` 5.1. - -#. In your :file:`php.ini` file, set ``cgi.rfc2616_headers = 0`` -#. In ``Web Site Properties -> File/Directory Security -> Anonymous - Access`` dialog box, check the ``Anonymous access`` checkbox and - uncheck any other checkboxes (i.e. uncheck ``Basic authentication``, - ``Integrated Windows authentication``, and ``Digest`` if it's - enabled.) Click ``OK``. -#. In ``Custom Errors``, select the range of ``401;1`` through ``401;5`` - and click the ``Set to Default`` button. - -.. seealso:: :rfc:`2616` - -.. _faq1_33: - -1.33 (withdrawn). ------------------ - -.. _faq1_34: - -1.34 Can I directly access a database or table pages? ------------------------------------------------------ - -Yes. Out of the box, you can use a :term:`URL` like -``http://server/phpMyAdmin/index.php?server=X&db=database&table=table&target=script``. -For ``server`` you can use the server number -which refers to the numeric host index (from ``$i``) in -:file:`config.inc.php`. The table and script parts are optional. - -If you want a URL like -``http://server/phpMyAdmin/database[/table][/script]``, you need to do some additional configuration. The following -lines apply only for the `Apache <https://httpd.apache.org>`_ web server. -First, make sure that you have enabled some features within the Apache global -configuration. You need ``Options SymLinksIfOwnerMatch`` and ``AllowOverride -FileInfo`` enabled for directory where phpMyAdmin is installed and you -need mod\_rewrite to be enabled. Then you just need to create the -following :term:`.htaccess` file in root folder of phpMyAdmin installation (don't -forget to change directory name inside of it): - -.. code-block:: apache - - RewriteEngine On - RewriteBase /path_to_phpMyAdmin - RewriteRule ^([a-zA-Z0-9_]+)/([a-zA-Z0-9_]+)/([a-z_]+\.php)$ index.php?db=$1&table=$2&target=$3 [R] - RewriteRule ^([a-zA-Z0-9_]+)/([a-z_]+\.php)$ index.php?db=$1&target=$2 [R] - RewriteRule ^([a-zA-Z0-9_]+)/([a-zA-Z0-9_]+)$ index.php?db=$1&table=$2 [R] - RewriteRule ^([a-zA-Z0-9_]+)$ index.php?db=$1 [R] - -.. seealso:: :ref:`faq4_8` - -.. _faq1_35: - -1.35 Can I use HTTP authentication with Apache CGI? ---------------------------------------------------- - -Yes. However you need to pass authentication variable to :term:`CGI` using -following rewrite rule: - -.. code-block:: apache - - RewriteEngine On - RewriteRule .* - [E=REMOTE_USER:%{HTTP:Authorization},L] - -.. _faq1_36: - -1.36 I get an error "500 Internal Server Error". ------------------------------------------------- - -There can be many explanations to this and a look at your server's -error log file might give a clue. - -.. _faq1_37: - -1.37 I run phpMyAdmin on cluster of different machines and password encryption in cookie auth doesn't work. ------------------------------------------------------------------------------------------------------------ - -If your cluster consist of different architectures, PHP code used for -encryption/decryption won't work correct. This is caused by use of -pack/unpack functions in code. Only solution is to use mcrypt -extension which works fine in this case. - -.. _faq1_38: - -1.38 Can I use phpMyAdmin on a server on which Suhosin is enabled? ------------------------------------------------------------------- - -Yes but the default configuration values of Suhosin are known to cause -problems with some operations, for example editing a table with many -columns and no :term:`primary key` or with textual :term:`primary key`. - -Suhosin configuration might lead to malfunction in some cases and it -can not be fully avoided as phpMyAdmin is kind of application which -needs to transfer big amounts of columns in single HTTP request, what -is something what Suhosin tries to prevent. Generally all -``suhosin.request.*``, ``suhosin.post.*`` and ``suhosin.get.*`` -directives can have negative effect on phpMyAdmin usability. You can -always find in your error logs which limit did cause dropping of -variable, so you can diagnose the problem and adjust matching -configuration variable. - -The default values for most Suhosin configuration options will work in -most scenarios, however you might want to adjust at least following -parameters: - -* `suhosin.request.max\_vars <https://suhosin.org/stories/configuration.html#suhosin-request-max-vars>`_ should - be increased (eg. 2048) -* `suhosin.post.max\_vars <https://suhosin.org/stories/configuration.html#suhosin-post-max-vars>`_ should be - increased (eg. 2048) -* `suhosin.request.max\_array\_index\_length <https://suhosin.org/stories/configuration.html#suhosin-request-max-array-index-length>`_ - should be increased (eg. 256) -* `suhosin.post.max\_array\_index\_length <https://suhosin.org/stories/configuration.html#suhosin-post-max-array-index-length>`_ - should be increased (eg. 256) -* `suhosin.request.max\_totalname\_length <https://suhosin.org/stories/configuration.html#suhosin-request-max-totalname-length>`_ - should be increased (eg. 8192) -* `suhosin.post.max\_totalname\_length <https://suhosin.org/stories/configuration.html#suhosin-post-max-totalname-length>`_ should be - increased (eg. 8192) -* `suhosin.get.max\_value\_length <https://suhosin.org/stories/configuration.html#suhosin-get-max-value-length>`_ - should be increased (eg. 1024) -* `suhosin.sql.bailout\_on\_error <https://suhosin.org/stories/configuration.html#suhosin-sql-bailout-on-error>`_ - needs to be disabled (the default) -* `suhosin.log.\* <https://suhosin.org/stories/configuration.html#logging-configuration>`_ should not - include :term:`SQL`, otherwise you get big - slowdown -* `suhosin.sql.union <https://suhosin.org/stories/configuration.html#suhosin- - sql-union>`_ must be disabled (which is the default). -* `suhosin.sql.multiselect <https://suhosin.org/stories/configuration.html# - suhosin-sql-multiselect>`_ must be disabled (which is the default). -* `suhosin.sql.comment <https://suhosin.org/stories/configuration.html#suhosin- - sql-comment>`_ must be disabled (which is the default). - -To further improve security, we also recommend these modifications: - -* `suhosin.executor.include.max\_traversal <https://suhosin.org/stories/ - configuration.html#suhosin-executor-include-max-traversal>`_ should be - enabled as a mitigation against local file inclusion attacks. We suggest - setting this to 2 as ``../`` is used with the ReCaptcha library. -* `suhosin.cookie.encrypt <https://suhosin.org/stories/configuration.html# - suhosin-cookie-encrypt>`_ should be enabled. -* `suhosin.executor.disable_emodifier <https://suhosin.org/stories/config - uration.html#suhosin-executor-disable-emodifier>`_ should be enabled. - -You can also disable the warning using the :config:option:`$cfg['SuhosinDisableWarning']`. - -.. _faq1_39: - -1.39 When I try to connect via https, I can log in, but then my connection is redirected back to http. What can cause this behavior? ------------------------------------------------------------------------------------------------------------------------------------- - -This is caused by the fact that PHP scripts have no knowledge that the site is -using https. Depending on used webserver, you should configure it to let PHP -know about URL and scheme used to access it. - -For example in Apache ensure that you have enabled ``SSLOptions`` and -``StdEnvVars`` in the configuration. - -.. seealso:: <https://httpd.apache.org/docs/2.4/mod/mod_ssl.html> - -.. _faq1_40: - -1.40 When accessing phpMyAdmin via an Apache reverse proxy, cookie login does not work. ---------------------------------------------------------------------------------------- - -To be able to use cookie auth Apache must know that it has to rewrite -the set-cookie headers. Example from the Apache 2.2 documentation: - -.. code-block:: apache - - ProxyPass /mirror/foo/ http://backend.example.com/ - ProxyPassReverse /mirror/foo/ http://backend.example.com/ - ProxyPassReverseCookieDomain backend.example.com public.example.com - ProxyPassReverseCookiePath / /mirror/foo/ - -Note: if the backend url looks like ``http://server/~user/phpmyadmin``, the -tilde (~) must be url encoded as %7E in the ProxyPassReverse\* lines. -This is not specific to phpmyadmin, it's just the behavior of Apache. - -.. code-block:: apache - - ProxyPass /mirror/foo/ http://backend.example.com/~user/phpmyadmin - ProxyPassReverse /mirror/foo/ http://backend.example.com/%7Euser/phpmyadmin - ProxyPassReverseCookiePath /%7Euser/phpmyadmin /mirror/foo - -.. seealso:: <https://httpd.apache.org/docs/2.2/mod/mod_proxy.html>, :config:option:`$cfg['PmaAbsoluteUri']` - -.. _faq1_41: - -1.41 When I view a database and ask to see its privileges, I get an error about an unknown column. --------------------------------------------------------------------------------------------------- - -The MySQL server's privilege tables are not up to date, you need to -run the :command:`mysql_upgrade` command on the server. - -.. _faq1_42: - -1.42 How can I prevent robots from accessing phpMyAdmin? --------------------------------------------------------- - -You can add various rules to :term:`.htaccess` to filter access based on user agent -field. This is quite easy to circumvent, but could prevent at least -some robots accessing your installation. - -.. code-block:: apache - - RewriteEngine on - - # Allow only GET and POST verbs - RewriteCond %{REQUEST_METHOD} !^(GET|POST)$ [NC,OR] - - # Ban Typical Vulnerability Scanners and others - # Kick out Script Kiddies - RewriteCond %{HTTP_USER_AGENT} ^(java|curl|wget).* [NC,OR] - RewriteCond %{HTTP_USER_AGENT} ^.*(libwww-perl|curl|wget|python|nikto|wkito|pikto|scan|acunetix).* [NC,OR] - RewriteCond %{HTTP_USER_AGENT} ^.*(winhttp|HTTrack|clshttp|archiver|loader|email|harvest|extract|grab|miner).* [NC,OR] - - # Ban Search Engines, Crawlers to your administrative panel - # No reasons to access from bots - # Ultimately Better than the useless robots.txt - # Did google respect robots.txt? - # Try google: intitle:phpMyAdmin intext:"Welcome to phpMyAdmin *.*.*" intext:"Log in" -wiki -forum -forums -questions intext:"Cookies must be enabled" - RewriteCond %{HTTP_USER_AGENT} ^.*(AdsBot-Google|ia_archiver|Scooter|Ask.Jeeves|Baiduspider|Exabot|FAST.Enterprise.Crawler|FAST-WebCrawler|www\.neomo\.de|Gigabot|Mediapartners-Google|Google.Desktop|Feedfetcher-Google|Googlebot|heise-IT-Markt-Crawler|heritrix|ibm.com\cs/crawler|ICCrawler|ichiro|MJ12bot|MetagerBot|msnbot-NewsBlogs|msnbot|msnbot-media|NG-Search|lucene.apache.org|NutchCVS|OmniExplorer_Bot|online.link.validator|psbot0|Seekbot|Sensis.Web.Crawler|SEO.search.Crawler|Seoma.\[SEO.Crawler\]|SEOsearch|Snappy|www.urltrends.com|www.tkl.iis.u-tokyo.ac.jp/~crawler|SynooBot|crawleradmin.t-info@telekom.de|TurnitinBot|voyager|W3.SiteSearch.Crawler|W3C-checklink|W3C_Validator|www.WISEnutbot.com|yacybot|Yahoo-MMCrawler|Yahoo\!.DE.Slurp|Yahoo\!.Slurp|YahooSeeker).* [NC] - RewriteRule .* - [F] - -.. _faq1_43: - -1.43 Why can't I display the structure of my table containing hundreds of columns? ----------------------------------------------------------------------------------- - -Because your PHP's ``memory_limit`` is too low; adjust it in :file:`php.ini`. - -.. _faq1:44: - -1.44 How can I reduce the installed size of phpMyAdmin on disk? ---------------------------------------------------------------- - -Some users have requested to be able to reduce the size of the phpMyAdmin installation. -This is not recommended and could lead to confusion over missing features, but can be done. -A list of files and corresponding functionality which degrade gracefully when removed include: - -* :file:`./vendor/tecnickcom/tcpdf` folder (exporting to PDF) -* :file:`./locale/` folder, or unused subfolders (interface translations) -* Any unused themes in :file:`./themes/` -* :file:`./js/vendor/jquery/src/` (included for licensing reasons) -* :file:`./js/line_counts.php` (removed in phpMyAdmin 4.8) -* :file:`./doc/` (documentation) -* :file:`./setup/` (setup script) -* :file:`./examples/` -* :file:`./sql/` (SQL scripts to configure advanced functionality) -* :file:`./js/vendor/openlayers/` (GIS visualization) - -.. _faq1_45: - -1.45 I get an error message about unknown authentication method caching_sha2_password when trying to log in ------------------------------------------------------------------------------------------------------------ - -When logging in using MySQL version 8 or newer, you may encounter an error message like this: - - mysqli_real_connect(): The server requested authentication method unknown to the client [caching_sha2_password] - - mysqli_real_connect(): (HY000/2054): The server requested authentication method unknown to the client - -This error is because of a version compatibility problem between PHP and MySQL. The MySQL project introduced a new authentication -method (our tests show this began with version 8.0.11) however PHP did not include the ability to use that authentication method. -PHP reports that this was fixed in PHP version 7.4. - -Users experiencing this are encouraged to upgrade their PHP installation, however a workaround exists. Your MySQL user account -can be set to use the older authentication with a command such as - -.. code-block:: mysql - - ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'PASSWORD'; - -.. seealso:: <https://github.com/phpmyadmin/phpmyadmin/issues/14220>, <https://stackoverflow.com/questions/49948350/phpmyadmin-on-mysql-8-0>, <https://bugs.php.net/bug.php?id=76243> - -.. _faqconfig: - -Configuration -+++++++++++++ - -.. _faq2_1: - -2.1 The error message "Warning: Cannot add header information - headers already sent by ..." is displayed, what's the problem? ------------------------------------------------------------------------------------------------------------------------------- - -Edit your :file:`config.inc.php` file and ensure there is nothing (I.E. no -blank lines, no spaces, no characters...) neither before the ``<?php`` tag at -the beginning, neither after the ``?>`` tag at the end. - -.. _faq2_2: - -2.2 phpMyAdmin can't connect to MySQL. What's wrong? ----------------------------------------------------- - -Either there is an error with your PHP setup or your username/password -is wrong. Try to make a small script which uses mysql\_connect and see -if it works. If it doesn't, it may be you haven't even compiled MySQL -support into PHP. - -.. _faq2_3: - -2.3 The error message "Warning: MySQL Connection Failed: Can't connect to local MySQL server through socket '/tmp/mysql.sock' (111) ..." is displayed. What can I do? ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- - -The error message can also be: :guilabel:`Error #2002 - The server is not -responding (or the local MySQL server's socket is not correctly configured)`. - -First, you need to determine what socket is being used by MySQL. To do this, -connect to your server and go to the MySQL bin directory. In this directory -there should be a file named *mysqladmin*. Type ``./mysqladmin variables``, and -this should give you a bunch of info about your MySQL server, including the -socket (*/tmp/mysql.sock*, for example). You can also ask your ISP for the -connection info or, if you're hosting your own, connect from the 'mysql' -command-line client and type 'status' to get the connection type and socket or -port number. - -Then, you need to tell PHP to use this socket. You can do this for all PHP in -the :file:`php.ini` or for phpMyAdmin only in the :file:`config.inc.php`. For -example: :config:option:`$cfg['Servers'][$i]['socket']` Please also make sure -that the permissions of this file allow to be readable by your webserver. - -On my RedHat-Box the socket of MySQL is */var/lib/mysql/mysql.sock*. -In your :file:`php.ini` you will find a line - -.. code-block:: ini - - mysql.default_socket = /tmp/mysql.sock - -change it to - -.. code-block:: ini - - mysql.default_socket = /var/lib/mysql/mysql.sock - -Then restart apache and it will work. - -Have also a look at the `corresponding section of the MySQL -documentation <https://dev.mysql.com/doc/refman/5.7/en/can-not-connect-to-server.html>`_. - -.. _faq2_4: - -2.4 Nothing is displayed by my browser when I try to run phpMyAdmin, what can I do? ------------------------------------------------------------------------------------ - -Try to set the :config:option:`$cfg['OBGzip']` directive to ``false`` in the phpMyAdmin configuration -file. It helps sometime. Also have a look at your PHP version number: -if it contains "b" or "alpha" it means you're running a testing -version of PHP. That's not a so good idea, please upgrade to a plain -revision. - -.. _faq2_5: - -2.5 Each time I want to insert or change a row or drop a database or a table, an error 404 (page not found) is displayed or, with HTTP or cookie authentication, I'm asked to log in again. What's wrong? ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- - -Check your webserver setup if it correctly fills in either PHP_SELF or REQUEST_URI variables. - -If you are running phpMyAdmin behind reverse proxy, please set the -:config:option:`$cfg['PmaAbsoluteUri']` directive in the phpMyAdmin -configuration file to match your setup. - -.. _faq2_6: - -2.6 I get an "Access denied for user: 'root@localhost' (Using password: YES)"-error when trying to access a MySQL-Server on a host which is port-forwarded for my localhost. ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- - -When you are using a port on your localhost, which you redirect via -port-forwarding to another host, MySQL is not resolving the localhost -as expected. Erik Wasser explains: The solution is: if your host is -"localhost" MySQL (the command line tool :command:`mysql` as well) always -tries to use the socket connection for speeding up things. And that -doesn't work in this configuration with port forwarding. If you enter -"127.0.0.1" as hostname, everything is right and MySQL uses the -:term:`TCP` connection. - -.. _faqthemes: - -2.7 Using and creating themes ------------------------------ - -See :ref:`themes`. - -.. _faqmissingparameters: - -2.8 I get "Missing parameters" errors, what can I do? ------------------------------------------------------ - -Here are a few points to check: - -* In :file:`config.inc.php`, try to leave the :config:option:`$cfg['PmaAbsoluteUri']` directive empty. See also - :ref:`faq4_7`. -* Maybe you have a broken PHP installation or you need to upgrade your - Zend Optimizer. See <https://bugs.php.net/bug.php?id=31134>. -* If you are using Hardened PHP with the ini directive - ``varfilter.max_request_variables`` set to the default (200) or - another low value, you could get this error if your table has a high - number of columns. Adjust this setting accordingly. (Thanks to Klaus - Dorninger for the hint). -* In the :file:`php.ini` directive ``arg_separator.input``, a value of ";" - will cause this error. Replace it with "&;". -* If you are using `Suhosin <https://suhosin.org/stories/index.html>`_, you - might want to increase `request limits <https://suhosin.org/stories/faq.html>`_. -* The directory specified in the :file:`php.ini` directive - ``session.save_path`` does not exist or is read-only (this can be caused - by `bug in the PHP installer <https://bugs.php.net/bug.php?id=39842>`_). - -.. _faq2_9: - -2.9 Seeing an upload progress bar ---------------------------------- - -To be able to see a progress bar during your uploads, your server must -have the `APC <https://www.php.net/manual/en/book.apc.php>`_ extension, the -`uploadprogress <https://pecl.php.net/package/uploadprogress>`_ one, or -you must be running PHP 5.4.0 or higher. Moreover, the JSON extension -has to be enabled in your PHP. - -If using APC, you must set ``apc.rfc1867`` to ``on`` in your :file:`php.ini`. - -If using PHP 5.4.0 or higher, you must set -``session.upload_progress.enabled`` to ``1`` in your :file:`php.ini`. However, -starting from phpMyAdmin version 4.0.4, session-based upload progress has -been temporarily deactivated due to its problematic behavior. - -.. seealso:: :rfc:`1867` - -.. _faqlimitations: - -Known limitations -+++++++++++++++++ - -.. _login_bug: - -3.1 When using HTTP authentication, a user who logged out can not log in again in with the same nick. ------------------------------------------------------------------------------------------------------ - -This is related to the authentication mechanism (protocol) used by -phpMyAdmin. To bypass this problem: just close all the opened browser -windows and then go back to phpMyAdmin. You should be able to log in -again. - -.. _faq3_2: - -3.2 When dumping a large table in compressed mode, I get a memory limit error or a time limit error. ----------------------------------------------------------------------------------------------------- - -Compressed dumps are built in memory and because of this are limited -to php's memory limit. For gzip/bzip2 exports this can be overcome -since 2.5.4 using :config:option:`$cfg['CompressOnFly']` (enabled by default). -zip exports can not be handled this way, so if you need zip files for larger -dump, you have to use another way. - -.. _faq3_3: - -3.3 With InnoDB tables, I lose foreign key relationships when I rename a table or a column. -------------------------------------------------------------------------------------------- - -This is an InnoDB bug, see <https://bugs.mysql.com/bug.php?id=21704>. - -.. _faq3_4: - -3.4 I am unable to import dumps I created with the mysqldump tool bundled with the MySQL server distribution. -------------------------------------------------------------------------------------------------------------- - -The problem is that older versions of ``mysqldump`` created invalid -comments like this: - -.. code-block:: mysql - - -- MySQL dump 8.22 - -- - -- Host: localhost Database: database - --------------------------------------------------------- - -- Server version 3.23.54 - -The invalid part of the code is the horizontal line made of dashes -that appears once in every dump created with mysqldump. If you want to -run your dump you have to turn it into valid MySQL. This means, you -have to add a whitespace after the first two dashes of the line or add -a # before it: ``-- -------------------------------------------------------`` or -``#---------------------------------------------------------`` - -.. _faq3_5: - -3.5 When using nested folders, multiple hierarchies are displayed in a wrong manner. ------------------------------------------------------------------------------------- - -Please note that you should not use the separating string multiple -times without any characters between them, or at the beginning/end of -your table name. If you have to, think about using another -TableSeparator or disabling that feature. - -.. seealso:: :config:option:`$cfg['NavigationTreeTableSeparator']` - -.. _faq3_6: - -3.6 (withdrawn). ------------------ - -.. _faq3_7: - -3.7 I have table with many (100+) columns and when I try to browse table I get series of errors like "Warning: unable to parse url". How can this be fixed? ------------------------------------------------------------------------------------------------------------------------------------------------------------ - -Your table neither have a :term:`primary key` nor an :term:`unique key`, so we must -use a long expression to identify this row. This causes problems to -parse\_url function. The workaround is to create a :term:`primary key` -or :term:`unique key`. - -.. _faq3_8: - -3.8 I cannot use (clickable) HTML-forms in columns where I put a MIME-Transformation onto! ------------------------------------------------------------------------------------------- - -Due to a surrounding form-container (for multi-row delete checkboxes), -no nested forms can be put inside the table where phpMyAdmin displays -the results. You can, however, use any form inside of a table if keep -the parent form-container with the target to tbl\_row\_delete.php and -just put your own input-elements inside. If you use a custom submit -input field, the form will submit itself to the displaying page again, -where you can validate the $HTTP\_POST\_VARS in a transformation. For -a tutorial on how to effectively use transformations, see our `Link -section <https://www.phpmyadmin.net/docs/>`_ on the -official phpMyAdmin-homepage. - -.. _faq3_9: - -3.9 I get error messages when using "--sql\_mode=ANSI" for the MySQL server. ----------------------------------------------------------------------------- - -When MySQL is running in ANSI-compatibility mode, there are some major -differences in how :term:`SQL` is structured (see -<https://dev.mysql.com/doc/refman/5.7/en/sql-mode.html>). Most important of all, the -quote-character (") is interpreted as an identifier quote character and not as -a string quote character, which makes many internal phpMyAdmin operations into -invalid :term:`SQL` statements. There is no -workaround to this behaviour. News to this item will be posted in `issue -#7383 <https://github.com/phpmyadmin/phpmyadmin/issues/7383>`_. - -.. _faq3_10: - -3.10 Homonyms and no primary key: When the results of a SELECT display more that one column with the same value (for example ``SELECT lastname from employees where firstname like 'A%'`` and two "Smith" values are displayed), if I click Edit I cannot be sure that I am editing the intended row. ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ - -Please make sure that your table has a :term:`primary key`, so that phpMyAdmin -can use it for the Edit and Delete links. - -.. _faq3_11: - -3.11 The number of rows for InnoDB tables is not correct. ---------------------------------------------------------- - -phpMyAdmin uses a quick method to get the row count, and this method only -returns an approximate count in the case of InnoDB tables. See -:config:option:`$cfg['MaxExactCount']` for a way to modify those results, but -this could have a serious impact on performance. -However, one can easily replace the approximate row count with exact count by -simply clicking on the approximate count. This can also be done for all tables -at once by clicking on the rows sum displayed at the bottom. - -.. seealso:: :config:option:`$cfg['MaxExactCount']` - -.. _faq3_12: - -3.12 (withdrawn). ------------------ - -.. _faq3_13: - -3.13 I get an error when entering ``USE`` followed by a db name containing an hyphen. -------------------------------------------------------------------------------------- - -The tests I have made with MySQL 5.1.49 shows that the API does not -accept this syntax for the USE command. - -.. _faq3_14: - -3.14 I am not able to browse a table when I don't have the right to SELECT one of the columns. ----------------------------------------------------------------------------------------------- - -This has been a known limitation of phpMyAdmin since the beginning and -it's not likely to be solved in the future. - -.. _faq3_15: - -3.15 (withdrawn). ------------------ - -.. _faq3_16: - -3.16 (withdrawn). ------------------ - -.. _faq3_17: - -3.17 (withdrawn). ------------------ - -.. _faq3_18: - -3.18 When I import a CSV file that contains multiple tables, they are lumped together into a single table. ----------------------------------------------------------------------------------------------------------- - -There is no reliable way to differentiate tables in :term:`CSV` format. For the -time being, you will have to break apart :term:`CSV` files containing multiple -tables. - -.. _faq3_19: - -3.19 When I import a file and have phpMyAdmin determine the appropriate data structure it only uses int, decimal, and varchar types. ------------------------------------------------------------------------------------------------------------------------------------- - -Currently, the import type-detection system can only assign these -MySQL types to columns. In future, more will likely be added but for -the time being you will have to edit the structure to your liking -post-import. Also, you should note the fact that phpMyAdmin will use -the size of the largest item in any given column as the column size -for the appropriate type. If you know you will be adding larger items -to that column then you should manually adjust the column sizes -accordingly. This is done for the sake of efficiency. - -.. _faq3_20: - -3.20 After upgrading, some bookmarks are gone or their content cannot be shown. -------------------------------------------------------------------------------- - -At some point, the character set used to store bookmark content has changed. -It's better to recreate your bookmark from the newer phpMyAdmin version. - -.. _faq3_21: - -3.21 I am unable to log in with a username containing unicode characters such as á. ------------------------------------------------------------------------------------ - -This can happen if MySQL server is not configured to use utf-8 as default -charset. This is a limitation of how PHP and the MySQL server interact; there -is no way for PHP to set the charset before authenticating. - -.. seealso:: - - `phpMyAdmin issue 12232 <https://github.com/phpmyadmin/phpmyadmin/issues/12232>`_, - `MySQL documentation note <https://www.php.net/manual/en/mysqli.real-connect.php#refsect1-mysqli.real-connect-notes>`_ - -.. _faqmultiuser: - -ISPs, multi-user installations -++++++++++++++++++++++++++++++ - -.. _faq4_1: - -4.1 I'm an ISP. Can I setup one central copy of phpMyAdmin or do I need to install it for each customer? --------------------------------------------------------------------------------------------------------- - -Since version 2.0.3, you can setup a central copy of phpMyAdmin for all your -users. The development of this feature was kindly sponsored by NetCologne GmbH. -This requires a properly setup MySQL user management and phpMyAdmin -:term:`HTTP` or cookie authentication. - -.. seealso:: :ref:`authentication_modes` - -.. _faq4_2: - -4.2 What's the preferred way of making phpMyAdmin secure against evil access? ------------------------------------------------------------------------------ - -This depends on your system. If you're running a server which cannot be -accessed by other people, it's sufficient to use the directory protection -bundled with your webserver (with Apache you can use :term:`.htaccess` files, -for example). If other people have telnet access to your server, you should use -phpMyAdmin's :term:`HTTP` or cookie authentication features. - -Suggestions: - -* Your :file:`config.inc.php` file should be ``chmod 660``. -* All your phpMyAdmin files should be chown -R phpmy.apache, where phpmy - is a user whose password is only known to you, and apache is the group - under which Apache runs. -* Follow security recommendations for PHP and your webserver. - -.. _faq4_3: - -4.3 I get errors about not being able to include a file in */lang* or in */libraries*. --------------------------------------------------------------------------------------- - -Check :file:`php.ini`, or ask your sysadmin to check it. The -``include_path`` must contain "." somewhere in it, and -``open_basedir``, if used, must contain "." and "./lang" to allow -normal operation of phpMyAdmin. - -.. _faq4_4: - -4.4 phpMyAdmin always gives "Access denied" when using HTTP authentication. ---------------------------------------------------------------------------- - -This could happen for several reasons: - -* :config:option:`$cfg['Servers'][$i]['controluser']` and/or :config:option:`$cfg['Servers'][$i]['controlpass']` are wrong. -* The username/password you specify in the login dialog are invalid. -* You have already setup a security mechanism for the phpMyAdmin- - directory, eg. a :term:`.htaccess` file. This would interfere with phpMyAdmin's - authentication, so remove it. - -.. _faq4_5: - -4.5 Is it possible to let users create their own databases? ------------------------------------------------------------ - -Starting with 2.2.5, in the user management page, you can enter a -wildcard database name for a user (for example "joe%"), and put the -privileges you want. For example, adding ``SELECT, INSERT, UPDATE, -DELETE, CREATE, DROP, INDEX, ALTER`` would let a user create/manage -his/her database(s). - -.. _faq4_6: - -4.6 How can I use the Host-based authentication additions? ----------------------------------------------------------- - -If you have existing rules from an old :term:`.htaccess` file, you can take them and -add a username between the ``'deny'``/``'allow'`` and ``'from'`` -strings. Using the username wildcard of ``'%'`` would be a major -benefit here if your installation is suited to using it. Then you can -just add those updated lines into the -:config:option:`$cfg['Servers'][$i]['AllowDeny']['rules']` array. - -If you want a pre-made sample, you can try this fragment. It stops the -'root' user from logging in from any networks other than the private -network :term:`IP` blocks. - -.. code-block:: php - - //block root from logging in except from the private networks - $cfg['Servers'][$i]['AllowDeny']['order'] = 'deny,allow'; - $cfg['Servers'][$i]['AllowDeny']['rules'] = array( - 'deny root from all', - 'allow root from localhost', - 'allow root from 10.0.0.0/8', - 'allow root from 192.168.0.0/16', - 'allow root from 172.16.0.0/12', - ); - -.. _faq4_7: - -4.7 Authentication window is displayed more than once, why? ------------------------------------------------------------ - -This happens if you are using a :term:`URL` to start phpMyAdmin which is -different than the one set in your :config:option:`$cfg['PmaAbsoluteUri']`. For -example, a missing "www", or entering with an :term:`IP` address while a domain -name is defined in the config file. - -.. _faq4_8: - -4.8 Which parameters can I use in the URL that starts phpMyAdmin? ------------------------------------------------------------------ - -When starting phpMyAdmin, you can use the ``db`` -and ``server`` parameters. This last one can contain -either the numeric host index (from ``$i`` of the configuration file) -or one of the host names present in the configuration file. - -For example, to jump directly to a particular database, a URL can be constructed as -``https://example.com/phpmyadmin/?db=sakila``. - -.. seealso:: :ref:`faq1_34` - -.. versionchanged:: 4.9.0 - - Support for using the ``pma_username`` and ``pma_password`` parameters was removed - in phpMyAdmin 4.9.0 (see `PMASA-2019-4 <https://www.phpmyadmin.net/security/PMASA-2019-4/>`_). - -.. _faqbrowsers: - -Browsers or client OS -+++++++++++++++++++++ - -.. _faq5_1: - -5.1 I get an out of memory error, and my controls are non-functional, when trying to create a table with more than 14 columns. ------------------------------------------------------------------------------------------------------------------------------- - -We could reproduce this problem only under Win98/98SE. Testing under -WinNT4 or Win2K, we could easily create more than 60 columns. A -workaround is to create a smaller number of columns, then come back to -your table properties and add the other columns. - -.. _faq5_2: - -5.2 With Xitami 2.5b4, phpMyAdmin won't process form fields. ------------------------------------------------------------- - -This is not a phpMyAdmin problem but a Xitami known bug: you'll face -it with each script/website that use forms. Upgrade or downgrade your -Xitami server. - -.. _faq5_3: - -5.3 I have problems dumping tables with Konqueror (phpMyAdmin 2.2.2). ---------------------------------------------------------------------- - -With Konqueror 2.1.1: plain dumps, zip and gzip dumps work ok, except -that the proposed file name for the dump is always 'tbl\_dump.php'. -The bzip2 dumps don't seem to work. With Konqueror 2.2.1: plain dumps -work; zip dumps are placed into the user's temporary directory, so -they must be moved before closing Konqueror, or else they disappear. -gzip dumps give an error message. Testing needs to be done for -Konqueror 2.2.2. - -.. _faq5_4: - -5.4 I can't use the cookie authentication mode because Internet Explorer never stores the cookies. --------------------------------------------------------------------------------------------------- - -MS Internet Explorer seems to be really buggy about cookies, at least -till version 6. - -.. _faq5_5: - -5.5 (withdrawn). ----------------------------------------------------------------------------- - -.. _faq5_6: - -5.6 (withdrawn). ------------------------------------------------------------------------------------------------------------------------------------------------------------------ - -.. _faq5_7: - -5.7 I refresh (reload) my browser, and come back to the welcome page. ---------------------------------------------------------------------- - -Some browsers support right-clicking into the frame you want to -refresh, just do this in the right frame. - -.. _faq5_8: - -5.8 With Mozilla 0.9.7 I have problems sending a query modified in the query box. ---------------------------------------------------------------------------------- - -Looks like a Mozilla bug: 0.9.6 was OK. We will keep an eye on future -Mozilla versions. - -.. _faq5_9: - -5.9 With Mozilla 0.9.? to 1.0 and Netscape 7.0-PR1 I can't type a whitespace in the SQL-Query edit area: the page scrolls down. -------------------------------------------------------------------------------------------------------------------------------- - -This is a Mozilla bug (see bug #26882 at `BugZilla -<https://bugzilla.mozilla.org/>`_). - -.. _faq5_10: - -5.10 (withdrawn). ------------------------------------------------------------------------------------------ - -.. _faq5_11: - -5.11 Extended-ASCII characters like German umlauts are displayed wrong. ------------------------------------------------------------------------ - -Please ensure that you have set your browser's character set to the -one of the language file you have selected on phpMyAdmin's start page. -Alternatively, you can try the auto detection mode that is supported -by the recent versions of the most browsers. - -.. _faq5_12: - -5.12 Mac OS X Safari browser changes special characters to "?". ---------------------------------------------------------------- - -This issue has been reported by a :term:`Mac OS X` user, who adds that Chimera, -Netscape and Mozilla do not have this problem. - -.. _faq5_13: - -5.13 (withdrawn) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- - -.. _faq5_14: - -5.14 (withdrawn) ------------------------------------------------------------------------------------------------------------------- - -.. _faq5_15: - -5.15 (withdrawn) ------------------------------------------ - -.. _faq5_16: - -5.16 With Internet Explorer, I get "Access is denied" Javascript errors. Or I cannot make phpMyAdmin work under Windows. ------------------------------------------------------------------------------------------------------------------------- - -Please check the following points: - -* Maybe you have defined your :config:option:`$cfg['PmaAbsoluteUri']` setting in - :file:`config.inc.php` to an :term:`IP` address and you are starting phpMyAdmin - with a :term:`URL` containing a domain name, or the reverse situation. -* Security settings in IE and/or Microsoft Security Center are too high, - thus blocking scripts execution. -* The Windows Firewall is blocking Apache and MySQL. You must allow - :term:`HTTP` ports (80 or 443) and MySQL - port (usually 3306) in the "in" and "out" directions. - -.. _faq5_17: - -5.17 With Firefox, I cannot delete rows of data or drop a database. -------------------------------------------------------------------- - -Many users have confirmed that the Tabbrowser Extensions plugin they -installed in their Firefox is causing the problem. - -.. _faq5_18: - -5.18 (withdrawn) ------------------------------------------------------------------------------------------ - -.. _faq5_19: - -5.19 I get JavaScript errors in my browser. -------------------------------------------- - -Issues have been reported with some combinations of browser -extensions. To troubleshoot, disable all extensions then clear your -browser cache to see if the problem goes away. - -.. _faq5_20: - -5.20 I get errors about violating Content Security Policy. ----------------------------------------------------------- - -If you see errors like: - -.. code-block:: text - - Refused to apply inline style because it violates the following Content Security Policy directive - -This is usually caused by some software, which wrongly rewrites -:mailheader:`Content Security Policy` headers. Usually this is caused by -antivirus proxy or browser addons which are causing such errors. - -If you see these errors, try disabling the HTTP proxy in antivirus or disable -the :mailheader:`Content Security Policy` rewriting in it. If that doesn't -help, try disabling browser extensions. - -Alternatively it can be also server configuration issue (if the webserver is -configured to emit :mailheader:`Content Security Policy` headers, they can -override the ones from phpMyAdmin). - -Programs known to cause these kind of errors: - -* Kaspersky Internet Security - -.. _faq5_21: - -5.21 I get errors about potentially unsafe operation when browsing table or executing SQL query. ------------------------------------------------------------------------------------------------- - -If you see errors like: - -.. code-block:: text - - A potentially unsafe operation has been detected in your request to this site. - -This is usually caused by web application firewall doing requests filtering. It -tries to prevent SQL injection, however phpMyAdmin is tool designed to execute -SQL queries, thus it makes it unusable. - -Please whitelist phpMyAdmin scripts from the web application firewall settings -or disable it completely for phpMyAdmin path. - -Programs known to cause these kind of errors: - -* Wordfence Web Application Firewall - -.. _faqusing: - -Using phpMyAdmin -++++++++++++++++ - -.. _faq6_1: - -6.1 I can't insert new rows into a table / I can't create a table - MySQL brings up a SQL error. ------------------------------------------------------------------------------------------------- - -Examine the :term:`SQL` error with care. -Often the problem is caused by specifying a wrong column-type. Common -errors include: - -* Using ``VARCHAR`` without a size argument -* Using ``TEXT`` or ``BLOB`` with a size argument - -Also, look at the syntax chapter in the MySQL manual to confirm that -your syntax is correct. - -.. _faq6_2: - -6.2 When I create a table, I set an index for two columns and phpMyAdmin generates only one index with those two columns. -------------------------------------------------------------------------------------------------------------------------- - -This is the way to create a multi-columns index. If you want two -indexes, create the first one when creating the table, save, then -display the table properties and click the Index link to create the -other index. - -.. _faq6_3: - -6.3 How can I insert a null value into my table? ------------------------------------------------- - -Since version 2.2.3, you have a checkbox for each column that can be -null. Before 2.2.3, you had to enter "null", without the quotes, as -the column's value. Since version 2.5.5, you have to use the checkbox -to get a real NULL value, so if you enter "NULL" this means you want a -literal NULL in the column, and not a NULL value (this works in PHP4). - -.. _faq6_4: - -6.4 How can I backup my database or table? ------------------------------------------- - -Click on a database or table name in the navigation panel, the properties will -be displayed. Then on the menu, click "Export", you can dump the structure, the -data, or both. This will generate standard :term:`SQL` statements that can be -used to recreate your database/table. You will need to choose "Save as file", -so that phpMyAdmin can transmit the resulting dump to your station. Depending -on your PHP configuration, you will see options to compress the dump. See also -the :config:option:`$cfg['ExecTimeLimit']` configuration variable. For -additional help on this subject, look for the word "dump" in this document. - -.. _faq6_5: - -6.5 How can I restore (upload) my database or table using a dump? How can I run a ".sql" file? ----------------------------------------------------------------------------------------------- - -Click on a database name in the navigation panel, the properties will -be displayed. Select "Import" from the list of tabs in the right–hand -frame (or ":term:`SQL`" if your phpMyAdmin -version is previous to 2.7.0). In the "Location of the text file" -section, type in the path to your dump filename, or use the Browse -button. Then click Go. With version 2.7.0, the import engine has been -re–written, if possible it is suggested that you upgrade to take -advantage of the new features. For additional help on this subject, -look for the word "upload" in this document. - -Note: For errors while importing of dumps exported from older MySQL versions to newer MySQL versions, -please check :ref:`faq6_41`. - -.. _faq6_6: - -6.6 How can I use the relation table in Query-by-example? ---------------------------------------------------------- - -Here is an example with the tables persons, towns and countries, all -located in the database "mydb". If you don't have a ``pma__relation`` -table, create it as explained in the configuration section. Then -create the example tables: - -.. code-block:: mysql - - CREATE TABLE REL_countries ( - country_code char(1) NOT NULL default '', - description varchar(10) NOT NULL default '', - PRIMARY KEY (country_code) - ) ENGINE=MyISAM; - - INSERT INTO REL_countries VALUES ('C', 'Canada'); - - CREATE TABLE REL_persons ( - id tinyint(4) NOT NULL auto_increment, - person_name varchar(32) NOT NULL default '', - town_code varchar(5) default '0', - country_code char(1) NOT NULL default '', - PRIMARY KEY (id) - ) ENGINE=MyISAM; - - INSERT INTO REL_persons VALUES (11, 'Marc', 'S', 'C'); - INSERT INTO REL_persons VALUES (15, 'Paul', 'S', 'C'); - - CREATE TABLE REL_towns ( - town_code varchar(5) NOT NULL default '0', - description varchar(30) NOT NULL default '', - PRIMARY KEY (town_code) - ) ENGINE=MyISAM; - - INSERT INTO REL_towns VALUES ('S', 'Sherbrooke'); - INSERT INTO REL_towns VALUES ('M', 'Montréal'); - -To setup appropriate links and display information: - -* on table "REL\_persons" click Structure, then Relation view -* for "town\_code", choose from dropdowns, "mydb", "REL\_towns", "code" - for foreign database, table and column respectively -* for "country\_code", choose from dropdowns, "mydb", "REL\_countries", - "country\_code" for foreign database, table and column respectively -* on table "REL\_towns" click Structure, then Relation view -* in "Choose column to display", choose "description" -* repeat the two previous steps for table "REL\_countries" - -Then test like this: - -* Click on your db name in the navigation panel -* Choose "Query" -* Use tables: persons, towns, countries -* Click "Update query" -* In the columns row, choose persons.person\_name and click the "Show" - tickbox -* Do the same for towns.description and countries.descriptions in the - other 2 columns -* Click "Update query" and you will see in the query box that the - correct joins have been generated -* Click "Submit query" - -.. _faqdisplay: - -6.7 How can I use the "display column" feature? ------------------------------------------------ - -Starting from the previous example, create the ``pma__table_info`` as -explained in the configuration section, then browse your persons -table, and move the mouse over a town code or country code. See also -:ref:`faq6_21` for an additional feature that "display column" -enables: drop-down list of possible values. - -.. _faqpdf: - -6.8 How can I produce a PDF schema of my database? --------------------------------------------------- - -First the configuration variables "relation", "table\_coords" and -"pdf\_pages" have to be filled in. Then you need to think about your -schema layout. Which tables will go on which pages? - -* Select your database in the navigation panel. -* Choose "Operations" in the navigation bar at the top. -* Choose "Edit :term:`PDF` Pages" near the - bottom of the page. -* Enter a name for the first :term:`PDF` page - and click Go. If you like, you can use the "automatic layout," which - will put all your linked tables onto the new page. -* Select the name of the new page (making sure the Edit radio button is - selected) and click Go. -* Select a table from the list, enter its coordinates and click Save. - Coordinates are relative; your diagram will be automatically scaled to - fit the page. When initially placing tables on the page, just pick any - coordinates -- say, 50x50. After clicking Save, you can then use the - :ref:`wysiwyg` to position the element correctly. -* When you'd like to look at your :term:`PDF`, first be sure to click the Save - button beneath the list of tables and coordinates, to save any changes you - made there. Then scroll all the way down, select the :term:`PDF` options you - want, and click Go. -* Internet Explorer for Windows may suggest an incorrect filename when - you try to save a generated :term:`PDF`. - When saving a generated :term:`PDF`, be - sure that the filename ends in ".pdf", for example "schema.pdf". - Browsers on other operating systems, and other browsers on Windows, do - not have this problem. - -.. seealso:: - - :ref:`relations` - -.. _faq6_9: - -6.9 phpMyAdmin is changing the type of one of my columns! ---------------------------------------------------------- - -No, it's MySQL that is doing `silent column type changing -<https://dev.mysql.com/doc/refman/5.7/en/silent-column-changes.html>`_. - -.. _underscore: - -6.10 When creating a privilege, what happens with underscores in the database name? ------------------------------------------------------------------------------------ - -If you do not put a backslash before the underscore, this is a -wildcard grant, and the underscore means "any character". So, if the -database name is "john\_db", the user would get rights to john1db, -john2db ... If you put a backslash before the underscore, it means -that the database name will have a real underscore. - -.. _faq6_11: - -6.11 What is the curious symbol ø in the statistics pages? ----------------------------------------------------------- - -It means "average". - -.. _faqexport: - -6.12 I want to understand some Export options. ----------------------------------------------- - -**Structure:** - -* "Add DROP TABLE" will add a line telling MySQL to `drop the table - <https://dev.mysql.com/doc/refman/5.7/en/drop-table.html>`_, if it already - exists during the import. It does NOT drop the table after your - export, it only affects the import file. -* "If Not Exists" will only create the table if it doesn't exist. - Otherwise, you may get an error if the table name exists but has a - different structure. -* "Add AUTO\_INCREMENT value" ensures that AUTO\_INCREMENT value (if - any) will be included in backup. -* "Enclose table and column names with backquotes" ensures that column - and table names formed with special characters are protected. -* "Add into comments" includes column comments, relations, and media (MIME) - types set in the pmadb in the dump as :term:`SQL` comments - (*/\* xxx \*/*). - -**Data:** - -* "Complete inserts" adds the column names on every INSERT command, for - better documentation (but resulting file is bigger). -* "Extended inserts" provides a shorter dump file by using only once the - INSERT verb and the table name. -* "Delayed inserts" are best explained in the `MySQL manual - INSERT DELAYED Syntax - <https://dev.mysql.com/doc/refman/5.7/en/insert-delayed.html>`_. -* "Ignore inserts" treats errors as a warning instead. Again, more info - is provided in the `MySQL manual - INSERT Syntax - <https://dev.mysql.com/doc/refman/5.7/en/insert.html>`_, but basically with - this selected, invalid values are adjusted and inserted rather than - causing the entire statement to fail. - -.. _faq6_13: - -6.13 I would like to create a database with a dot in its name. --------------------------------------------------------------- - -This is a bad idea, because in MySQL the syntax "database.table" is -the normal way to reference a database and table name. Worse, MySQL -will usually let you create a database with a dot, but then you cannot -work with it, nor delete it. - -.. _faqsqlvalidator: - -6.14 (withdrawn). ------------------ - -.. _faq6_15: - -6.15 I want to add a BLOB column and put an index on it, but MySQL says "BLOB column '...' used in key specification without a key length". -------------------------------------------------------------------------------------------------------------------------------------------- - -The right way to do this, is to create the column without any indexes, -then display the table structure and use the "Create an index" dialog. -On this page, you will be able to choose your BLOB column, and set a -size to the index, which is the condition to create an index on a BLOB -column. - -.. _faq6_16: - -6.16 How can I simply move in page with plenty editing fields? --------------------------------------------------------------- - -You can use :kbd:`Ctrl+arrows` (:kbd:`Option+Arrows` in Safari) for moving on -most pages with many editing fields (table structure changes, row editing, -etc.). - -.. _faq6_17: - -6.17 Transformations: I can't enter my own mimetype! What is this feature then useful for? ------------------------------------------------------------------------------------------- - -Defining mimetypes is of no use if you can't put -transformations on them. Otherwise you could just put a comment on the -column. Because entering your own mimetype will cause serious syntax -checking issues and validation, this introduces a high-risk false- -user-input situation. Instead you have to initialize mimetypes using -functions or empty mimetype definitions. - -Plus, you have a whole overview of available mimetypes. Who knows all those -mimetypes by heart so he/she can enter it at will? - -.. _faqbookmark: - -6.18 Bookmarks: Where can I store bookmarks? Why can't I see any bookmarks below the query box? What are these variables for? ------------------------------------------------------------------------------------------------------------------------------ - -You need to have configured the :ref:`linked-tables` for using bookmarks -feature. Once you have done that, you can use bookmarks in the :guilabel:`SQL` tab. - -.. seealso:: :ref:`bookmarks` - -.. _faq6_19: - -6.19 How can I create simple LATEX document to include exported table? ----------------------------------------------------------------------- - -You can simply include table in your LATEX documents, -minimal sample document should look like following one (assuming you -have table exported in file :file:`table.tex`): - -.. code-block:: latex - - \documentclass{article} % or any class you want - \usepackage{longtable} % for displaying table - \begin{document} % start of document - \include{table} % including exported table - \end{document} % end of document - -.. _faq6_20: - -6.20 I see a lot of databases which are not mine, and cannot access them. -------------------------------------------------------------------------- - -You have one of these global privileges: CREATE TEMPORARY TABLES, SHOW -DATABASES, LOCK TABLES. Those privileges also enable users to see all the -database names. So if your users do not need those privileges, you can remove -them and their databases list will shorten. - -.. seealso:: <https://bugs.mysql.com/bug.php?id=179> - -.. _faq6_21: - -6.21 In edit/insert mode, how can I see a list of possible values for a column, based on some foreign table? ------------------------------------------------------------------------------------------------------------- - -You have to setup appropriate links between the tables, and also setup -the "display column" in the foreign table. See :ref:`faq6_6` for an -example. Then, if there are 100 values or less in the foreign table, a -drop-down list of values will be available. You will see two lists of -values, the first list containing the key and the display column, the -second list containing the display column and the key. The reason for -this is to be able to type the first letter of either the key or the -display column. For 100 values or more, a distinct window will appear, -to browse foreign key values and choose one. To change the default -limit of 100, see :config:option:`$cfg['ForeignKeyMaxLimit']`. - -.. _faq6_22: - -6.22 Bookmarks: Can I execute a default bookmark automatically when entering Browse mode for a table? ------------------------------------------------------------------------------------------------------ - -Yes. If a bookmark has the same label as a table name and it's not a -public bookmark, it will be executed. - -.. seealso:: :ref:`bookmarks` - -.. _faq6_23: - -6.23 Export: I heard phpMyAdmin can export Microsoft Excel files? ------------------------------------------------------------------ - -You can use :term:`CSV` for Microsoft Excel, -which works out of the box. - -.. versionchanged:: 3.4.5 - Since phpMyAdmin 3.4.5 support for direct export to Microsoft Excel version - 97 and newer was dropped. - -.. _faq6_24: - -6.24 Now that phpMyAdmin supports native MySQL 4.1.x column comments, what happens to my column comments stored in pmadb? -------------------------------------------------------------------------------------------------------------------------- - -Automatic migration of a table's pmadb-style column comments to the -native ones is done whenever you enter Structure page for this table. - -.. _faq6_25: - -6.25 (withdrawn). ------------------ - -.. _faq6_26: - -6.26 How can I select a range of rows? --------------------------------------- - -Click the first row of the range, hold the shift key and click the -last row of the range. This works everywhere you see rows, for example -in Browse mode or on the Structure page. - -.. _faq6_27: - -6.27 What format strings can I use? ------------------------------------ - -In all places where phpMyAdmin accepts format strings, you can use -``@VARIABLE@`` expansion and `strftime <https://www.php.net/strftime>`_ -format strings. The expanded variables depend on a context (for -example, if you haven't chosen a table, you can not get the table -name), but the following variables can be used: - -``@HTTP_HOST@`` - HTTP host that runs phpMyAdmin -``@SERVER@`` - MySQL server name -``@VERBOSE@`` - Verbose MySQL server name as defined in :config:option:`$cfg['Servers'][$i]['verbose']` -``@VSERVER@`` - Verbose MySQL server name if set, otherwise normal -``@DATABASE@`` - Currently opened database -``@TABLE@`` - Currently opened table -``@COLUMNS@`` - Columns of the currently opened table -``@PHPMYADMIN@`` - phpMyAdmin with version - -.. _wysiwyg: - -6.28 How can I easily edit relational schema for export? --------------------------------------------------------- - -By clicking on the button 'toggle scratchboard' on the page where you -edit x/y coordinates of those elements you can activate a scratchboard -where all your elements are placed. By clicking on an element, you can -move them around in the pre-defined area and the x/y coordinates will -get updated dynamically. Likewise, when entering a new position -directly into the input field, the new position in the scratchboard -changes after your cursor leaves the input field. - -You have to click on the 'OK'-button below the tables to save the new -positions. If you want to place a new element, first add it to the -table of elements and then you can drag the new element around. - -By changing the paper size and the orientation you can change the size -of the scratchboard as well. You can do so by just changing the -dropdown field below, and the scratchboard will resize automatically, -without interfering with the current placement of the elements. - -If ever an element gets out of range you can either enlarge the paper -size or click on the 'reset' button to place all elements below each -other. - -.. _faq6_29: - -6.29 Why can't I get a chart from my query result table? --------------------------------------------------------- - -Not every table can be put to the chart. Only tables with one, two or -three columns can be visualised as a chart. Moreover the table must be -in a special format for chart script to understand it. Currently -supported formats can be found in :ref:`charts`. - -.. _faq6_30: - -6.30 Import: How can I import ESRI Shapefiles? ----------------------------------------------- - -An ESRI Shapefile is actually a set of several files, where .shp file -contains geometry data and .dbf file contains data related to those -geometry data. To read data from .dbf file you need to have PHP -compiled with the dBase extension (--enable-dbase). Otherwise only -geometry data will be imported. - -To upload these set of files you can use either of the following -methods: - -Configure upload directory with :config:option:`$cfg['UploadDir']`, upload both .shp and .dbf files with -the same filename and chose the .shp file from the import page. - -Create a zip archive with .shp and .dbf files and import it. For this -to work, you need to set :config:option:`$cfg['TempDir']` to a place where the web server user can -write (for example ``'./tmp'``). - -To create the temporary directory on a UNIX-based system, you can do: - -.. code-block:: sh - - cd phpMyAdmin - mkdir tmp - chmod o+rwx tmp - -.. _faq6_31: - -6.31 How do I create a relation in designer? --------------------------------------------- - -To select relation, click: The display column is shown in pink. To -set/unset a column as the display column, click the "Choose column to -display" icon, then click on the appropriate column name. - -.. _faq6_32: - -6.32 How can I use the zoom search feature? -------------------------------------------- - -The Zoom search feature is an alternative to table search feature. It allows -you to explore a table by representing its data in a scatter plot. You can -locate this feature by selecting a table and clicking the :guilabel:`Search` -tab. One of the sub-tabs in the :guilabel:`Table Search` page is -:guilabel:`Zoom Search`. - -Consider the table REL\_persons in :ref:`faq6_6` for -an example. To use zoom search, two columns need to be selected, for -example, id and town\_code. The id values will be represented on one -axis and town\_code values on the other axis. Each row will be -represented as a point in a scatter plot based on its id and -town\_code. You can include two additional search criteria apart from -the two fields to display. - -You can choose which field should be -displayed as label for each point. If a display column has been set -for the table (see :ref:`faqdisplay`), it is taken as the label unless -you specify otherwise. You can also select the maximum number of rows -you want to be displayed in the plot by specifing it in the 'Max rows -to plot' field. Once you have decided over your criteria, click 'Go' -to display the plot. - -After the plot is generated, you can use the -mousewheel to zoom in and out of the plot. In addition, panning -feature is enabled to navigate through the plot. You can zoom-in to a -certain level of detail and use panning to locate your area of -interest. Clicking on a point opens a dialogue box, displaying field -values of the data row represented by the point. You can edit the -values if required and click on submit to issue an update query. Basic -instructions on how to use can be viewed by clicking the 'How to use?' -link located just above the plot. - -.. _faq6_33: - -6.33 When browsing a table, how can I copy a column name? ---------------------------------------------------------- - -Selecting the name of the column within the browse table header cell -for copying is difficult, as the columns support reordering by -dragging the header cells as well as sorting by clicking on the linked -column name. To copy a column name, double-click on the empty area -next to the column name, when the tooltip tells you to do so. This -will show you an input box with the column name. You may right-click -the column name within this input box to copy it to your clipboard. - -.. _faq6_34: - -6.34 How can I use the Favorite Tables feature? ---------------------------------------------------------- - -Favorite Tables feature is very much similar to Recent Tables feature. -It allows you to add a shortcut for the frequently used tables of any -database in the navigation panel . You can easily navigate to any table -in the list by simply choosing it from the list. These tables are stored -in your browser's local storage if you have not configured your -`phpMyAdmin Configuration Storage`. Otherwise these entries are stored in -`phpMyAdmin Configuration Storage`. - -IMPORTANT: In absence of `phpMyAdmin Configuration Storage`, your Favorite -tables may be different in different browsers based on your different -selections in them. - -To add a table to Favorite list simply click on the `Gray` star in front -of a table name in the list of tables of a Database and wait until it -turns to `Yellow`. -To remove a table from list, simply click on the `Yellow` star and -wait until it turns `Gray` again. - -Using :config:option:`$cfg['NumFavoriteTables']` in your :file:`config.inc.php` -file, you can define the maximum number of favorite tables shown in the -navigation panel. Its default value is `10`. - -.. _faq6_35: - -6.35 How can I use the Range search feature? ---------------------------------------------------------- - -With the help of range search feature, one can specify a range of values for -particular column(s) while performing search operation on a table from the `Search` -tab. - -To use this feature simply click on the `BETWEEN` or `NOT BETWEEN` operators -from the operator select list in front of the column name. On choosing one of the -above options, a dialog box will show up asking for the `Minimum` and `Maximum` -value for that column. Only the specified range of values will be included -in case of `BETWEEN` and excluded in case of `NOT BETWEEN` from the final results. - -Note: The Range search feature will work only `Numeric` and `Date` data type columns. - -.. _faq6_36: - -6.36 What is Central columns and how can I use this feature? ------------------------------------------------------------- - -As the name suggests, the Central columns feature enables to maintain a central list of -columns per database to avoid similar name for the same data element and bring consistency -of data type for the same data element. You can use the central list of columns to -add an element to any table structure in that database which will save from writing -similar column name and column definition. - -To add a column to central list, go to table structure page, check the columns you want -to include and then simply click on "Add to central columns". If you want to add all -unique columns from more than one table from a database then go to database structure page, -check the tables you want to include and then select "Add columns to central list". - -To remove a column from central list, go to Table structure page, check the columns you want -to remove and then simply click on "Remove from central columns". If you want to remove all -columns from more than one tables from a database then go to database structure page, -check the tables you want to include and then select "Remove columns from central list". - -To view and manage the central list, select the database you want to manage central columns -for then from the top menu click on "Central columns". You will be taken to a page where -you will have options to edit, delete or add new columns to central list. - -.. _faq6_37: - -6.37 How can I use Improve Table structure feature? ---------------------------------------------------------- - -Improve table structure feature helps to bring the table structure upto -Third Normal Form. A wizard is presented to user which asks questions about the -elements during the various steps for normalization and a new structure is proposed -accordingly to bring the table into the First/Second/Third Normal form. -On startup of the wizard, user gets to select upto what normal form they want to -normalize the table structure. - -Here is an example table which you can use to test all of the three First, Second and -Third Normal Form. - -.. code-block:: mysql - - CREATE TABLE `VetOffice` ( - `petName` varchar(64) NOT NULL, - `petBreed` varchar(64) NOT NULL, - `petType` varchar(64) NOT NULL, - `petDOB` date NOT NULL, - `ownerLastName` varchar(64) NOT NULL, - `ownerFirstName` varchar(64) NOT NULL, - `ownerPhone1` int(12) NOT NULL, - `ownerPhone2` int(12) NOT NULL, - `ownerEmail` varchar(64) NOT NULL, - ); - -The above table is not in First normal Form as no :term:`primary key` exists. Primary key -is supposed to be (`petName`,`ownerLastName`,`ownerFirstName`) . If the :term:`primary key` -is chosen as suggested the resultant table won't be in Second as well as Third Normal -form as the following dependencies exists. - -.. code-block:: mysql - - (OwnerLastName, OwnerFirstName) -> OwnerEmail - (OwnerLastName, OwnerFirstName) -> OwnerPhone - PetBreed -> PetType - -Which says, OwnerEmail depends on OwnerLastName and OwnerFirstName. -OwnerPhone depends on OwnerLastName and OwnerFirstName. -PetType depends on PetBreed. - -.. _faq6_38: - -6.38 How can I reassign auto-incremented values? ------------------------------------------------- - -Some users prefer their AUTO_INCREMENT values to be consecutive; this is not -always the case after row deletion. - -Here are the steps to accomplish this. These are manual steps because they -involve a manual verification at one point. - -* Ensure that you have exclusive access to the table to rearrange - -* On your :term:`primary key` column (i.e. id), remove the AUTO_INCREMENT setting - -* Delete your primary key in Structure > indexes - -* Create a new column future_id as primary key, AUTO_INCREMENT - -* Browse your table and verify that the new increments correspond to what - you're expecting - -* Drop your old id column - -* Rename the future_id column to id - -* Move the new id column via Structure > Move columns - -.. _faq6_39: - -6.39 What is the "Adjust privileges" option when renaming, copying, or moving a database, table, column, or procedure? ----------------------------------------------------------------------------------------------------------------------- - -When renaming/copying/moving a database/table/column/procedure, -MySQL does not adjust the original privileges relating to these objects -on its own. By selecting this option, phpMyAdmin will adjust the privilege -table so that users have the same privileges on the new items. - -For example: A user 'bob'@'localhost' has a 'SELECT' privilege on a -column named 'id'. Now, if this column is renamed to 'id_new', MySQL, -on its own, would **not** adjust the column privileges to the new column name. -phpMyAdmin can make this adjustment for you automatically. - -Notes: - -* While adjusting privileges for a database, the privileges of all - database-related elements (tables, columns and procedures) are also adjusted - to the database's new name. - -* Similarly, while adjusting privileges for a table, the privileges of all - the columns inside the new table are also adjusted. - -* While adjusting privileges, the user performing the operation **must** have the following - privileges: - - * SELECT, INSERT, UPDATE, DELETE privileges on following tables: - `mysql`.`db`, `mysql`.`columns_priv`, `mysql`.`tables_priv`, `mysql`.`procs_priv` - * FLUSH privilege (GLOBAL) - -Thus, if you want to replicate the database/table/column/procedure as it is -while renaming/copying/moving these objects, make sure you have checked this option. - -.. _faq6_40: - -6.40 I see "Bind parameters" checkbox in the "SQL" page. How do I write parameterized SQL queries? --------------------------------------------------------------------------------------------------- - -From version 4.5, phpMyAdmin allows users to execute parameterized queries in the "SQL" page. -Parameters should be prefixed with a colon(:) and when the "Bind parameters" checkbox is checked -these parameters will be identified and input fields for these parameters will be presented. -Values entered in these field will be substituted in the query before being executed. - -.. _faq6_41: - -6.41 I get import errors while importing the dumps exported from older MySQL versions (pre-5.7.6) into newer MySQL versions (5.7.7+), but they work fine when imported back on same older versions ? --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- - -If you get errors like *#1031 - Table storage engine for 'table_name' doesn't have this option* -while importing the dumps exported from pre-5.7.7 MySQL servers into new MySQL server versions 5.7.7+, -it might be because ROW_FORMAT=FIXED is not supported with InnoDB tables. Moreover, the value of -`innodb_strict_mode <https://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html#sysvar_innodb_strict_mode>`_ would define if this would be reported as a warning or as an error. - -Since MySQL version 5.7.9, the default value for `innodb_strict_mode` is `ON` and thus would generate -an error when such a CREATE TABLE or ALTER TABLE statement is encountered. - -There are two ways of preventing such errors while importing: - -* Change the value of `innodb_strict_mode` to `OFF` before starting the import and turn it `ON` after - the import is successfully completed. -* This can be achieved in two ways: - - * Go to 'Variables' page and edit the value of `innodb_strict_mode` - * Run the query : `SET GLOBAL `innodb_strict_mode` = '[value]'` - -After the import is done, it is suggested that the value of `innodb_strict_mode` should be reset to the -original value. - -.. _faqproject: - -phpMyAdmin project -++++++++++++++++++ - -.. _faq7_1: - -7.1 I have found a bug. How do I inform developers? ---------------------------------------------------- - -Our issues tracker is located at <https://github.com/phpmyadmin/phpmyadmin/issues>. -For security issues, please refer to the instructions at <https://www.phpmyadmin.net/security> to email -the developers directly. - -.. _faq7_2: - -7.2 I want to translate the messages to a new language or upgrade an existing language, where do I start? ---------------------------------------------------------------------------------------------------------- - -Translations are very welcome and all you need to have are the -language skills. The easiest way is to use our `online translation -service <https://hosted.weblate.org/projects/phpmyadmin/>`_. You can check -out all the possibilities to translate in the `translate section on -our website <https://www.phpmyadmin.net/translate/>`_. - -.. _faq7_3: - -7.3 I would like to help out with the development of phpMyAdmin. How should I proceed? --------------------------------------------------------------------------------------- - -We welcome every contribution to the development of phpMyAdmin. You -can check out all the possibilities to contribute in the `contribute -section on our website -<https://www.phpmyadmin.net/contribute/>`_. - -.. seealso:: :ref:`developers` - -.. _faqsecurity: - -Security -++++++++ - -.. _faq8_1: - -8.1 Where can I get information about the security alerts issued for phpMyAdmin? --------------------------------------------------------------------------------- - -Please refer to <https://www.phpmyadmin.net/security/>. - -.. _faq8_2: - -8.2 How can I protect phpMyAdmin against brute force attacks? -------------------------------------------------------------- - -If you use Apache web server, phpMyAdmin exports information about -authentication to the Apache environment and it can be used in Apache -logs. Currently there are two variables available: - -``userID`` - User name of currently active user (he does not have to be logged in). -``userStatus`` - Status of currently active user, one of ``ok`` (user is logged in), - ``mysql-denied`` (MySQL denied user login), ``allow-denied`` (user denied - by allow/deny rules), ``root-denied`` (root is denied in configuration), - ``empty-denied`` (empty password is denied). - -``LogFormat`` directive for Apache can look like following: - -.. code-block:: apache - - LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\" %{userID}n %{userStatus}n" pma_combined - -You can then use any log analyzing tools to detect possible break-in -attempts. - -.. _faq8_3: - -8.3 Why are there path disclosures when directly loading certain files? ------------------------------------------------------------------------ - -This is a server configuration problem. Never enable ``display_errors`` on a production site. - -.. _faq8_4: - -8.4 CSV files exported from phpMyAdmin could allow a formula injection attack. ------------------------------------------------------------------------------- - -It is possible to generate a :term:`CSV` file that, when imported to a spreadsheet program such as Microsoft Excel, -could potentially allow the execution of arbitrary commands. - -The CSV files generated by phpMyAdmin could potentially contain text that would be interpreted by a spreadsheet program as -a formula, but we do not believe escaping those fields is the proper behavior. There is no means to properly escape and -differentiate between a desired text output and a formula that should be escaped, and CSV is a text format where function -definitions should not be interpreted anyway. We have discussed this at length and feel it is the responsibility of the -spreadsheet program to properly parse and sanitize such data on input instead. - -Google also has a `similar view <https://sites.google.com/site/bughunteruniversity/nonvuln/csv-excel-formula-injection>`_. - -.. _faqsynchronization: - -Synchronization -+++++++++++++++ - -.. _faq9_1: - -9.1 (withdrawn). ----------------- - -.. _faq9_2: - -9.2 (withdrawn). ----------------- |