PMA\libraries\SysInfoLinux::memory PHP Метод

    function memory()
    {
        preg_match_all(MEMORY_REGEXP, file_get_contents('/proc/meminfo'), $matches);
        $mem = array_combine($matches[1], $matches[2]);
        $defaults = array('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;
    }