php生成二维码和QR图片中间加logo_PHP教程

<?php /**  * php生成二维码的2种方式
  * @author insun  */ //1.google开放api
 $urlToEncode="smart_insun";
 generateQRfromGoogle($urlToEncode);
 function generateQRfromGoogle($chl,$widhtHeight =&#39;150&#39;,$EC_level=&#39;L&#39;,$margin=&#39;0&#39;)
 {  //$url = urlencode($url);
  echo &#39;<img src="http://chart.apis.google.com/chart?chs=&#39;.$widhtHeight.&#39;x&#39;.$widhtHeight.&#39;&cht=qr&chld=&#39;.$EC_level.&#39;|&#39;.$margin.&#39;&chl=&#39;.$chl.&#39;" alt="QR code" widhtHeight="&#39;.$widhtHeight.&#39;" widhtHeight="&#39;.$widhtHeight.&#39;"/>';
 } //2.php类库PHP QR Code:http://phpqrcode.sourceforge.net/
 /* $data 数据
 $filename 保存的图片名称
 $errorCorrectionLevel 错误处理级别
 $matrixPointSize 每个黑点的像素
 $margin 图片外围的白色边框像素
 */ include "phpqrcode/qrlib.php";
 $data = "insun";
 $filename ="QR.jpg";
 $errorCorrectionLevel = 'L';
 $matrixPointSize = 2;
 $margin = 5;
 QRcode::png($data, $filename, $errorCorrectionLevel, $matrixPointSize, $margin);//这样就生成了QR.jpg
 

QR图片中间加logo

<?php /**  * QR Code + Logo Generator QR图片中间加logo，QR是根据google开放api生成的，其实啥都没有
   *    * http://labs.nticompassinc.com     */  //ini_set("auto_detect_line_endings", true);
  
  $data = isset($_GET[&#39;data&#39;]) ? $_GET[&#39;data&#39;] : &#39;http://weixin.qq.com/r/8bxsY6LEqpzVh7MAn_nV&#39;;
  $size = isset($_GET[&#39;size&#39;]) ? $_GET[&#39;size&#39;] : &#39;200x200&#39;;
  $logo = isset($_GET[&#39;logo&#39;]) ? $_GET[&#39;logo&#39;] : &#39;./logo.jpg&#39;;//中间那logo图
  // Get QR Code image from Google Chart API
  // http://code.google.com/apis/chart/infographics/docs/qr_codes.html
  //https://chart.googleapis.com/chart?cht=qr&chld=H|1&chs=&#39;.$size.&#39;&chl=&#39;.urlencode($data));
  $png = "http://chart.googleapis.com/chart?chs=150x150&cht=qr&chl=Hello+world&chld=L|1&choe=UTF-8";
  $QR = imagecreatefrompng($png);//Warning: imagecreatefrompng() [function.imagecreatefrompng]: Unable to find the wrapper "https" - did you forget to enable it when you configured PHP? =
  //$QR = imagecreatefrompng(&#39;./chart.png&#39;);//外面那QR图
  if($logo !== FALSE){
   $logo = imagecreatefromstring(file_get_contents($logo));
  
   $QR_width = imagesx($QR);
   $QR_height = imagesy($QR);
       
   $logo_width = imagesx($logo);
   $logo_height = imagesy($logo);
          
   // Scale logo to fit in the QR Code
   $logo_qr_width = $QR_width/5;
   $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, $logo_height);
  }
  header(&#39;Content-type: image/png&#39;);
  imagepng($QR);
  imagedestroy($QR);
 ?>