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<?php |
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declare(strict_types=1); |
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namespace PhpMyAdmin\Server\SysInfo; |
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use function array_combine; |
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use function array_merge; |
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use function file_get_contents; |
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use function intval; |
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use function is_array; |
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use function is_readable; |
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use function mb_strpos; |
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use function mb_substr; |
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use function preg_match_all; |
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use function preg_split; |
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/** |
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* Linux based SysInfo class |
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*/ |
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class Linux extends Base |
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{ |
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/** |
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* The OS name |
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* |
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* @var string |
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*/ |
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public $os = 'Linux'; |
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/** |
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* Gets load information |
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* |
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* @return array<string, int> with load data |
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*/ |
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public function loadavg() |
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{ |
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$buf = file_get_contents('/proc/stat'); |
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if ($buf === false) { |
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$buf = ''; |
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} |
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$pos = mb_strpos($buf, "\n"); |
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if ($pos === false) { |
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$pos = 0; |
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} |
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$nums = preg_split( |
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'/\s+/', |
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mb_substr( |
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$buf, |
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0, |
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$pos |
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) |
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); |
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if (! is_array($nums)) { |
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return ['busy' => 0, 'idle' => 0]; |
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} |
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return [ |
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'busy' => (int) $nums[1] + (int) $nums[2] + (int) $nums[3], |
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'idle' => (int) $nums[4], |
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]; |
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} |
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/** |
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* Checks whether class is supported in this environment |
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*/ |
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public static function isSupported(): bool |
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{ |
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return @is_readable('/proc/meminfo') && @is_readable('/proc/stat'); |
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} |
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/** |
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* Gets information about memory usage |
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* |
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* @return array with memory usage data |
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*/ |
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public function memory() |
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{ |
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$content = @file_get_contents('/proc/meminfo'); |
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if ($content === false) { |
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return []; |
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} |
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preg_match_all(SysInfo::MEMORY_REGEXP, $content, $matches); |
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/** @var array<string, int>|false $mem */ |
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$mem = array_combine($matches[1], $matches[2]); |
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if ($mem === false) { |
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return []; |
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} |
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$defaults = [ |
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'MemTotal' => 0, |
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'MemFree' => 0, |
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'Cached' => 0, |
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'Buffers' => 0, |
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'SwapTotal' => 0, |
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'SwapFree' => 0, |
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'SwapCached' => 0, |
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]; |
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$mem = array_merge($defaults, $mem); |
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foreach ($mem as $idx => $value) { |
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$mem[$idx] = intval($value); |
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} |
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$mem['MemUsed'] = $mem['MemTotal'] - $mem['MemFree'] - $mem['Cached'] - $mem['Buffers']; |
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$mem['SwapUsed'] = $mem['SwapTotal'] - $mem['SwapFree'] - $mem['SwapCached']; |
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return $mem; |
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} |
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} |
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phpmyadmin /
phpmyadmin
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