$pagehandle=@fopen('php://stdin','r');
 $contents = "";
  do {
    $data = @fread($pagehandle, 8192); //block size to keep memory low
    if (strlen($data) == 0) {
      break;
    }
    $contents = explode("\n", $data);
    unset($data);
    
    //Do your code here

    unset($contents);
  } while(true);
  @fclose($pagehandle)