libraries/sysinfo.lib.php

   1 <?php
   2 /* vim: set expandtab sw=4 ts=4 sts=4: */
   3 /**
   4  * Library for extracting information about system memory and cpu. Currently supports all
   5  * Windows and Linux plattforms
   6  *
   7  * This code is based on the OS Classes from the phpsysinfo project (http://phpsysinfo.sourceforge.net/)
   8  *
   9  * @package phpMyAdmin
  10  */
  11
  12 /**
  13  * @return array
  14  */
  15 function getSysInfo()
  16 {
  17     $supported = array('Linux','WINNT');
  18
  19     $sysinfo = array();
  20
  21     if (in_array(PHP_OS, $supported)) {
  22         return eval("return new ".PHP_OS."();");
  23     }
  24
  25     return $sysinfo;
  26 }
  27
  28
  29 class WINNT
  30 {
  31     private $_wmi;
  32
  33     public $os = 'WINNT';
  34
  35     public function __construct() {
  36         // initialize the wmi object
  37         $objLocator = new COM('WbemScripting.SWbemLocator');
  38         $this->_wmi = $objLocator->ConnectServer();
  39     }
  40
  41     function loadavg() {
  42         $loadavg = "";
  43         $sum = 0;
  44         $buffer = $this->_getWMI('Win32_Processor', array('LoadPercentage'));
  45
  46         foreach ($buffer as $load) {
  47             $value = $load['LoadPercentage'];
  48             $loadavg .= $value.' ';
  49             $sum += $value;
  50         }
  51
  52         return array('loadavg' => $sum / count($buffer));
  53     }
  54
  55     private function _getWMI($strClass, $strValue = array()) {
  56         $arrData = array();
  57         $value = "";
  58
  59         $objWEBM = $this->_wmi->Get($strClass);
  60         $arrProp = $objWEBM->Properties_;
  61         $arrWEBMCol = $objWEBM->Instances_();
  62         foreach ($arrWEBMCol as $objItem) {
  63             if (is_array($arrProp)) {
  64                 reset($arrProp);
  65             }
  66             $arrInstance = array();
  67             foreach ($arrProp as $propItem) {
  68                 if ( empty($strValue)) {
  69                     eval("\$value = \$objItem->".$propItem->Name.";");
  70                     $arrInstance[$propItem->Name] = trim($value);
  71                 } else {
  72                     if (in_array($propItem->Name, $strValue)) {
  73                         eval("\$value = \$objItem->".$propItem->Name.";");
  74                         $arrInstance[$propItem->Name] = trim($value);
  75                     }
  76                 }
  77             }
  78             $arrData[] = $arrInstance;
  79         }
  80         return $arrData;
  81     }
  82
  83
  84     function memory() {
  85         $buffer = $this->_getWMI("Win32_OperatingSystem", array('TotalVisibleMemorySize', 'FreePhysicalMemory'));
  86         $mem = Array();
  87         $mem['MemTotal'] = $buffer[0]['TotalVisibleMemorySize'];
  88         $mem['MemFree'] = $buffer[0]['FreePhysicalMemory'];
  89         $mem['MemUsed'] = $mem['MemTotal'] - $mem['MemFree'];
  90
  91         $buffer = $this->_getWMI('Win32_PageFileUsage');
  92
  93         $mem['SwapTotal'] = 0;
  94         $mem['SwapUsed'] = 0;
  95         $mem['SwapPeak'] = 0;
  96
  97         foreach ($buffer as $swapdevice) {
  98             $mem['SwapTotal'] += $swapdevice['AllocatedBaseSize'] * 1024;
  99             $mem['SwapUsed'] += $swapdevice['CurrentUsage'] * 1024;
 100             $mem['SwapPeak'] += $swapdevice['PeakUsage'] * 1024;
 101         }
 102
 103         return $mem;
 104     }
 105 }
 106
 107 class Linux
 108 {
 109     public $os = 'Linux';
 110
 111     function loadavg() {
 112         $buf = file_get_contents('/proc/stat');
 113         $nums=preg_split("/\s+/", substr($buf,0,strpos($buf,"\n")));
 114         return Array('busy' => $nums[1]+$nums[2]+$nums[3], 'idle' => intval($nums[4]));
 115     }
 116
 117     function memory() {
 118         preg_match_all('/^(MemTotal|MemFree|Cached|Buffers|SwapCached|SwapTotal|SwapFree):\s+(.*)\s*kB/im', file_get_contents('/proc/meminfo'), $matches);
 119
 120         $mem = array_combine( $matches[1], $matches[2] );
 121         $mem['MemUsed'] = $mem['MemTotal'] - $mem['MemFree'] - $mem['Cached'] - $mem['Buffers'];
 122         $mem['SwapUsed'] = $mem['SwapTotal'] - $mem['SwapFree'] - $mem['SwapCached'];
 123
 124         foreach ($mem as $idx=>$value)
 125             $mem[$idx] = intval($value);
 126
 127         return $mem;
 128     }
 129 }