Detailed explanation of the steps for php to call the Google interface to generate a QR code

This time I will bring you a detailed explanation of the steps to generate a QR code by calling the google interface in php. , let’s take a look. Example, call the google interface to implement the QR code.

<?php 
$data = isset($_GET[&#39;t&#39;]) ? $_GET[&#39;t&#39;] : &#39;http://www.XXX.com&#39;; 
$size = isset($_GET[&#39;size&#39;]) ? $_GET[&#39;size&#39;] : &#39;150x150&#39;; 
$logo = isset($_GET[&#39;logo&#39;]) ? $_GET[&#39;logo&#39;] :"./image/logo.jpg "/>";
$chl = urlencode($logo); 
$png = "http://chart.googleapis.com/chart?chs=$size&cht=qr&chl=$chl&chld=L|1&choe=UTF-8"; 
$QR = imagecreatefrompng($png);//外面那QR图
//以下是二维码生成的主要代码
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); 
$logo_qr_width = $QR_width/5; 
$scale = $logo_width/$logo_qr_width; 
$logo_qr_height = $logo_height/$scale; 
$from_width = ($QR_width-$logo_qr_width)/2; 
imagecopyresampled($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);
//销毁二维码图像
imagedestroy($QR); 
?>

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!

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