Thinkphp323 integrates phpqrcode to generate QR code with logo

There is no QR code related library in Thinkphp, so we can complete the function of generating QR codes by integrating phpqrcode.

Download phpqrcode

Download address: http://phpqrcode.sourceforge.net/

Integrated into Thinkphp framework

Create a new directory phpqrcode under "ThinkPHPLibraryVendor" and extract the contents of the compressed package to this folder.

Call phpqrcode to generate QR code

Add the following method under the IndexController controller:

public function qrcode($url="www.baidu.com",$level=3,$size=4)
  {
       Vendor('phpqrcode.phpqrcode');
       $errorCorrectionLevel =intval($level) ;//容错级别 
       $matrixPointSize = intval($size);//生成图片大小 
       //生成二维码图片 
       $object = new \QRcode();
       $object->png($url, false, $errorCorrectionLevel, $matrixPointSize, 2);  
  }

Visit: http://127.0.0.1/Index/qrcodeYou can see the generated QR code.

Generate a QR code with logo

First call phpqrcode to generate a QR code, and then use php's image related function to add the logo image to the generated QR code image.

include 'phpqrcode.php';  
$value = 'http://www.cnblogs.com/txw1958/'; //二维码内容  
$errorCorrectionLevel = 'L';//容错级别  
$matrixPointSize = 6;//生成图片大小  
//生成二维码图片  
QRcode::png($value, 'qrcode.png', $errorCorrectionLevel, $matrixPointSize, 2);  
$logo = 'logo.png';//准备好的logo图片  
$QR = 'qrcode.png';//已经生成的原始二维码图  

if ($logo !== FALSE) {  
  $QR = imagecreatefromstring(file_get_contents($QR));  
  $logo = imagecreatefromstring(file_get_contents($logo));  
  $QR_width = imagesx($QR);//二维码图片宽度  
  $QR_height = imagesy($QR);//二维码图片高度  
  $logo_width = imagesx($logo);//logo图片宽度  
  $logo_height = imagesy($logo);//logo图片高度  
  $logo_qr_width = $QR_width / 5;  
  $scale = $logo_width/$logo_qr_width;  
  $logo_qr_height = $logo_height/$scale;  
  $from_width = ($QR_width - $logo_qr_width) / 2;  
  //重新组合图片并调整大小  
  imagecopyresampled($QR, $logo, $from_width, $from_width, 0, 0, $logo_qr_width,  
  $logo_qr_height, $logo_width, $logo_height);  
}  
//输出图片  
imagepng($QR, 'helloweixin.png');  
echo '<img src="helloweixin.png">';

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