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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* Hold PhpMyAdmin\SysInfoLinux class
*
* @package PhpMyAdmin
*/
declare(strict_types=1);
namespace PhpMyAdmin;
use PhpMyAdmin\SysInfo;
use PhpMyAdmin\SysInfoBase;
/**
* Linux based SysInfo class
*
* @package PhpMyAdmin
*/
class SysInfoLinux extends SysInfoBase
{
public $os = 'Linux';
/**
* Gets load information
*
* @return array with load data
*/
public function loadavg()
{
$buf = file_get_contents('/proc/stat');
if ($buf === false) {
$buf = '';
}
$pos = mb_strpos($buf, "\n");
if ($pos === false) {
$pos = 0;
}
$nums = preg_split(
"/\s+/",
mb_substr(
$buf,
0,
$pos
)
);
return [
'busy' => (int) $nums[1] + (int) $nums[2] + (int) $nums[3],
'idle' => (int) $nums[4],
];
}
/**
* Checks whether class is supported in this environment
*
* @return bool true on success
*/
public function supported()
{
return @is_readable('/proc/meminfo') && @is_readable('/proc/stat');
}
/**
* Gets information about memory usage
*
* @return array with memory usage data
*/
public function memory()
{
preg_match_all(
SysInfo::MEMORY_REGEXP,
file_get_contents('/proc/meminfo'),
$matches
);
$mem = array_combine($matches[1], $matches[2]);
$defaults = [
'MemTotal' => 0,
'MemFree' => 0,
'Cached' => 0,
'Buffers' => 0,
'SwapTotal' => 0,
'SwapFree' => 0,
'SwapCached' => 0,
];
$mem = array_merge($defaults, $mem);
foreach ($mem as $idx => $value) {
$mem[$idx] = intval($value);
}
$mem['MemUsed'] = $mem['MemTotal']
- $mem['MemFree'] - $mem['Cached'] - $mem['Buffers'];
$mem['SwapUsed'] = $mem['SwapTotal']
- $mem['SwapFree'] - $mem['SwapCached'];
return $mem;
}
}
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