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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* Library for extracting information about system memory and cpu.
* Currently supports all Windows and Linux plattforms
*
* This code is based on the OS Classes from the phpsysinfo project
* (http://phpsysinfo.sourceforge.net/)
*
* @package PhpMyAdmin
*/
if (! defined('PHPMYADMIN')) {
exit;
}
/**
* @return array
*/
function getSysInfo()
{
$supported = array('Linux', 'WINNT');
$sysinfo = array();
if (in_array(PHP_OS, $supported)) {
return eval("return new ".PHP_OS."();");
}
return $sysinfo;
}
class WINNT
{
private $_wmi;
public $os = 'WINNT';
public function __construct()
{
// initialize the wmi object
$objLocator = new COM('WbemScripting.SWbemLocator');
$this->_wmi = $objLocator->ConnectServer();
}
function loadavg()
{
$loadavg = "";
$sum = 0;
$buffer = $this->_getWMI('Win32_Processor', array('LoadPercentage'));
foreach ($buffer as $load) {
$value = $load['LoadPercentage'];
$loadavg .= $value.' ';
$sum += $value;
}
return array('loadavg' => $sum / count($buffer));
}
private function _getWMI($strClass, $strValue = array())
{
$arrData = array();
$value = "";
$objWEBM = $this->_wmi->Get($strClass);
$arrProp = $objWEBM->Properties_;
$arrWEBMCol = $objWEBM->Instances_();
foreach ($arrWEBMCol as $objItem) {
if (is_array($arrProp)) {
reset($arrProp);
}
$arrInstance = array();
foreach ($arrProp as $propItem) {
if ( empty($strValue)) {
eval("\$value = \$objItem->".$propItem->Name.";");
$arrInstance[$propItem->Name] = trim($value);
} else {
if (in_array($propItem->Name, $strValue)) {
eval("\$value = \$objItem->".$propItem->Name.";");
$arrInstance[$propItem->Name] = trim($value);
}
}
}
$arrData[] = $arrInstance;
}
return $arrData;
}
function memory()
{
$buffer = $this->_getWMI("Win32_OperatingSystem", array('TotalVisibleMemorySize', 'FreePhysicalMemory'));
$mem = Array();
$mem['MemTotal'] = $buffer[0]['TotalVisibleMemorySize'];
$mem['MemFree'] = $buffer[0]['FreePhysicalMemory'];
$mem['MemUsed'] = $mem['MemTotal'] - $mem['MemFree'];
$buffer = $this->_getWMI('Win32_PageFileUsage');
$mem['SwapTotal'] = 0;
$mem['SwapUsed'] = 0;
$mem['SwapPeak'] = 0;
foreach ($buffer as $swapdevice) {
$mem['SwapTotal'] += $swapdevice['AllocatedBaseSize'] * 1024;
$mem['SwapUsed'] += $swapdevice['CurrentUsage'] * 1024;
$mem['SwapPeak'] += $swapdevice['PeakUsage'] * 1024;
}
return $mem;
}
}
class Linux
{
public $os = 'Linux';
function loadavg()
{
$buf = file_get_contents('/proc/stat');
$nums=preg_split("/\s+/", substr($buf, 0, strpos($buf, "\n")));
return Array('busy' => $nums[1]+$nums[2]+$nums[3], 'idle' => intval($nums[4]));
}
function memory()
{
preg_match_all('/^(MemTotal|MemFree|Cached|Buffers|SwapCached|SwapTotal|SwapFree):\s+(.*)\s*kB/im', file_get_contents('/proc/meminfo'), $matches);
$mem = array_combine($matches[1], $matches[2]);
$mem['MemUsed'] = $mem['MemTotal'] - $mem['MemFree'] - $mem['Cached'] - $mem['Buffers'];
$mem['SwapUsed'] = $mem['SwapTotal'] - $mem['SwapFree'] - $mem['SwapCached'];
foreach ($mem as $idx=>$value) {
$mem[$idx] = intval($value);
}
return $mem;
}
}
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