class SystemInfoWindows
{
 /**
  * 判斷指定路徑下指定文件是否存在，如不存在則創建
  * @param string $fileName 文件名
  * @param string $content 文件內容
  * @return string 返回文件路徑
  */
 private function getFilePath($fileName, $content)
 {
  $path = dirname(__FILE__) . "\\$fileName";
  if (!file_exists($path)) {
   file_put_contents($path, $content);
  }
  return $path;
 }
 /**
  * 獲得cpu使用率vbs文件生成函數
  * @return string 返回vbs文件路徑
  */
 private function getCupUsageVbsPath()
 {
  return $this->getFilePath(
   'cpu_usage.vbs',
   "On Error Resume Next
    Set objProc = GetObject(\"winmgmts:\\\\.\\root\cimv2:win32_processor='cpu0'\")
    WScript.Echo(objProc.LoadPercentage)"
  );
 }
 /**
  * 獲得總內存及可用物理內存JSON vbs文件生成函數
  * @return string 返回vbs文件路徑
  */
 private function getMemoryUsageVbsPath()
 {
  return $this->getFilePath(
   'memory_usage.vbs',
   "On Error Resume Next
    Set objWMI = GetObject(\"winmgmts:\\\\.\\root\cimv2\")
    Set colOS = objWMI.InstancesOf(\"Win32_OperatingSystem\")
    For Each objOS in colOS
     Wscript.Echo(\"{\"\"TotalVisibleMemorySize\"\":\"  objOS.TotalVisibleMemorySize  \",\"\"FreePhysicalMemory\"\":\"  objOS.FreePhysicalMemory  \"}\")
    Next"
  );
 }
 /**
  * 獲得CPU使用率
  * @return Number
  */
 public function getCpuUsage()
 {
  $path = $this->getCupUsageVbsPath();
  exec("cscript -nologo $path", $usage);
  return $usage[0];
 }
 /**
  * 獲得內存使用率數組
  * @return array
  */
 public function getMemoryUsage()
 {
  $path = $this->getMemoryUsageVbsPath();
  exec("cscript -nologo $path", $usage);
  $memory = json_decode($usage[0], true);
  $memory['usage'] = Round((($memory['TotalVisibleMemorySize'] - $memory['FreePhysicalMemory']) / $memory['TotalVisibleMemorySize']) * 100);
  return $memory;
 }
}

$info = new SystemInfoWindows();
$cpu = $info->getCpuUsage();
$memory = $info->getMemoryUsage();
echo "當前系統CPU使用率：{$cpu}%，內存使用率{$memory['usage']}%";