PHP combined with phpqrcode generates QR code with picture LOGO-PHP Tutorial-php.cn

PHP combined with phpqrcode generates QR code with picture LOGO

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Release： 2016-08-08 09:21:49

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PHP generates QR codes with LOGO. Maybe many experts have already achieved it, but they didn’t pay too much attention to this aspect before. There is a small project in this section that requires QR code generation, so I checked some information and sent it. There is a PHP class library phpqrcode that is very convenient for generating this kind of QR code. I tested it on the index. I will share my usage and code with novices. I hope experts can encourage me.

Generation effect: Logo picture in the middle

First you need to download this class library package, or I will attach this class library later, the specific usage code:

1. Basic QR code generation unit, Directly output standard QR code:

<?php    
//文件输出    
    include(&#39;phpqrcode.php&#39;);    
// 二维码数据    
    $data = &#39;http://www.codesc.net&#39;;    
// 生成的文件名    
   $filename = &#39;ewm.png&#39;;   
// 纠错级别：L、M、Q、H    
    $errorCorrectionLevel = &#39;L&#39;;    
// 点的大小：1到10    
    $matrixPointSize = 4;    
    QRcode::png($data, $filename, $errorCorrectionLevel, $matrixPointSize, 2);    
?>

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2. Generate standard QR code and QR code with logo:

<?php
include (&#39;phpqrcode.php&#39;);
$value = &#39;http://www.codesc.net&#39;;//二维码数据
$errorCorrectionLevel = &#39;L&#39;;//纠错级别：L、M、Q、H
$matrixPointSize = 10;//二维码点的大小：1到10
QRcode::png ( $value, &#39;ewm.png&#39;, $errorCorrectionLevel, $matrixPointSize, 2 );//生成不带Logo的二维码图片文件名
echo "二维码已生成" . "<br />";
$logo = 'emwlogo.gif';//需要显示在二维码中的Logo图像
$QR = 'ewmlogo.png';//生成带Logo的二维码文件名
if ($logo !== FALSE) {
    $QR = imagecreatefromstring ( file_get_contents ( $QR ) );
    $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 );
}
imagepng ( $QR, 'ewmlogo.png' );
?>

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The above introduces the use of php combined with phpqrcode to generate a QR code with a picture LOGO, including the relevant content. I hope it will be helpful to friends who are interested in PHP tutorials.