ajax请求时，调试代码显的太烦了，只好把返回信息写到文件中，观察调试。

class Record
{
	var  $pf;

	public function r_start($file = 'record')
	{
		ob_start();
		echo "____________________________________________\n";
		$this->pf  = fopen($file, 'a+' );
	}


	public function r_close()
	{
		echo "\n____________________________________________\n";
		$out= ob_get_contents() ;
		ob_end_clean();
		fwrite($this->pf , $out);
		fclose($this->pf );
	}
}
?>