PHP kill / terminate process by exe name

php-tools.php

/**
 * Kill windows process if found and older that given time (defaults to now)
 * Ref: https://stackoverflow.com/questions/14385122/how-to-kill-a-windows-process-running-longer-than-30-minutes
 */
function killProcessByName($processName, $ifOlderThan = "now"){

  //Build datetime formated for "wmic process CreationDate"
  //Format: year-month-day-hour-minute-second-microsecond-timezone (in minutes!!!)
  $dt = new DateTime($ifOlderThan);
  $t = $dt->format('YmdHis.u') . ($dt->format('Z') / 60);
  //wmic query to terminate process by name if creationdate less than
  $query = "wmic process where \"name='$processName' AND CreationDate < '$t'\" call terminate";

  ob_start();
  passthru($query . " 2>&1");
  $output = ob_get_contents();
  ob_end_clean();

  if(strpos($output, "ReturnValue = 0") !== false){
    return true;
  }else{
    return false;
  }
}