libraries/SysInfoWINNT.php

   1 <?php
   2 /* vim: set expandtab sw=4 ts=4 sts=4: */
   3 /**
   4  * Hold PMA\libraries\SysInfoWINNT class
   5  *
   6  * @package PMA
   7  */
   8 namespace PMA\libraries;
   9
  10 use COM;
  11
  12 /**
  13  * Windows NT based SysInfo class
  14  *
  15  * @package PhpMyAdmin-sysinfo
  16  */
  17 class SysInfoWINNT extends \PMA\libraries\SysInfo
  18 {
  19     private $_wmi;
  20     public $os = 'WINNT';
  21
  22     /**
  23      * Constructor to access to wmi database.
  24      */
  25     public function __construct()
  26     {
  27         if (!class_exists('COM')) {
  28             $this->_wmi = null;
  29         } else {
  30             // initialize the wmi object
  31             $objLocator = new COM('WbemScripting.SWbemLocator');
  32             $this->_wmi = $objLocator->ConnectServer();
  33         }
  34     }
  35
  36     /**
  37      * Gets load information
  38      *
  39      * @return array with load data
  40      */
  41     function loadavg()
  42     {
  43         $loadavg = "";
  44         $sum = 0;
  45         $buffer = $this->_getWMI('Win32_Processor', array('LoadPercentage'));
  46
  47         foreach ($buffer as $load) {
  48             $value = $load['LoadPercentage'];
  49             $loadavg .= $value . ' ';
  50             $sum += $value;
  51         }
  52
  53         return array('loadavg' => $sum / count($buffer));
  54     }
  55
  56     /**
  57      * Checks whether class is supported in this environment
  58      *
  59      * @return true on success
  60      */
  61     public function supported()
  62     {
  63         return !is_null($this->_wmi);
  64     }
  65
  66     /**
  67      * Reads data from WMI
  68      *
  69      * @param string $strClass Class to read
  70      * @param array  $strValue Values to read
  71      *
  72      * @return array with results
  73      */
  74     private function _getWMI($strClass, $strValue = array())
  75     {
  76         $arrData = array();
  77
  78         $objWEBM = $this->_wmi->Get($strClass);
  79         $arrProp = $objWEBM->Properties_;
  80         $arrWEBMCol = $objWEBM->Instances_();
  81         foreach ($arrWEBMCol as $objItem) {
  82             $arrInstance = array();
  83             foreach ($arrProp as $propItem) {
  84                 $name = $propItem->Name;
  85                 if (empty($strValue) || in_array($name, $strValue)) {
  86                     $value = $objItem->$name;
  87                     $arrInstance[$name] = trim($value);
  88                 }
  89             }
  90             $arrData[] = $arrInstance;
  91         }
  92
  93         return $arrData;
  94     }
  95
  96     /**
  97      * Gets information about memory usage
  98      *
  99      * @return array with memory usage data
 100      */
 101     function memory()
 102     {
 103         $buffer = $this->_getWMI(
 104             "Win32_OperatingSystem",
 105             array('TotalVisibleMemorySize', 'FreePhysicalMemory')
 106         );
 107         $mem = Array();
 108         $mem['MemTotal'] = $buffer[0]['TotalVisibleMemorySize'];
 109         $mem['MemFree'] = $buffer[0]['FreePhysicalMemory'];
 110         $mem['MemUsed'] = $mem['MemTotal'] - $mem['MemFree'];
 111
 112         $buffer = $this->_getWMI('Win32_PageFileUsage');
 113
 114         $mem['SwapTotal'] = 0;
 115         $mem['SwapUsed'] = 0;
 116         $mem['SwapPeak'] = 0;
 117
 118         foreach ($buffer as $swapdevice) {
 119             $mem['SwapTotal'] += $swapdevice['AllocatedBaseSize'] * 1024;
 120             $mem['SwapUsed'] += $swapdevice['CurrentUsage'] * 1024;
 121             $mem['SwapPeak'] += $swapdevice['PeakUsage'] * 1024;
 122         }
 123
 124         return $mem;
 125     }
 126 }