แก้อย่างไงครับ Warning: fopen(logo_pb.png) [function.fopen]: failed to open stream: No such file or directory in D:\AppServ\www\newmeter\fpdf1.6\fpdf.php on line 1226 FPDF error: Can't open image file: logo_pb.png

function _parsepng($file)
{
	//Extract info from a PNG file
	$f=fopen($file,'rb');
	if(!$f)
		$this->Error('Can\'t open image file: '.$file);
	//Check signature
	if($this->_readstream($f,8)!=chr(137).'PNG'.chr(13).chr(10).chr(26).chr(10))
		$this->Error('Not a PNG file: '.$file);