php计划任务之验证是否有多个进程调用同一个job的方法

// $pro 方法名字 
private function _verifyPsAux($pro)
{
  $arrProcess = array(
   $pro => "/usr/local/www/scrm/public/index.php /records/job/{$pro}"
  );
  $pidNumber = 0;
  foreach ($arrProcess as $key => $value) {
   exec("ps aux|grep '$key'", $return);
   $isRunning = false; // 指令未执行
   foreach ($return as $k => $v) {
    if(! strrpos($v, $value)) continue;
    // preg_match('/\d+:\d+ +\/usr/iu', $v, $match);
    // if (! isset($match[0])) continue;
    $isRunning = true;
    $pidNumber++;
   }
   // 如果当前进程存在，则终止
   if ($isRunning && $pidNumber > 1) {
    echo '[_' . date('Y-m-d H:i:s') . "_] 进程正在执行中\r\n";
    exit();
   }
  }
}