PHP生成带头像的二维码

<?php
require_once 'phpqrcode.php';
QRcode::png('http://www.baidu.com', 'filename.png',QR_ECLEVEL_L,100); // creates file 
   $QR = imagecreatefrompng("filename.png");
   $logo = imagecreatefrompng("logo.png");
  var_dump($QR);
    var_dump($logo);
   $QR_width = imagesx($QR);
   $QR_height = imagesy($QR);
    //echo $QR_width;
	//echo $QR_height;
   $logo_width = imagesx($logo);
   $logo_height = imagesy($logo);
	//echo $logo_width;
	//echo $logo_height;  
   // Scale logo to fit in the QR Code
   $logo_qr_width = $QR_width/9;
   $scale = $logo_width/$logo_qr_width;
   $logo_qr_height = $logo_height/$scale;
   $from_width = ($QR_width-$logo_qr_width)/2;
   //echo $from_width;exit;

   imagecopyresampled($QR, $logo, $from_width, $from_width, 0, 0, $logo_qr_width, $logo_qr_height, $logo_width, $logo_height);
   imagepng($QR,'last.png');

如果是输出到浏览器上  把最好一句改成imagepng($QR);

具体在附件上