jquery版
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport"
content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<style>
*{margin:0;padding:0}
.absoluteCenter{ width:250px; height:250px;position:absolute; text-align: center; left:50%; top:50%; margin-left: -150px; margin-top: -150px; }
</style>
</head>
<body>
<div id="code" class="absoluteCenter">
<p style="margin-bottom: 30px; margin-top: -30px;">Share with friends</p>
</div>
</body>
</html>
<!--<script type="text/javascript" src="jquery.js"></script>-->
<script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
<script type="text/javascript" src="/template/default/code-css/jquery.qrcode.min.js"></script>
<script>
$("#code").qrcode({
render: "table", //table方式
width: 250, //宽度
height:250, //高度
text: "Remember to share with friends oh 😊：" //任意内容
});
</script>
//控制器生成
//安装
$ composer require endroid/qrcode
<?php
use Endroid\QrCode\QrCode;
$qrCode = new QrCode();
$qrCode->setText('Life is too short to be generating QR codes')
->setSize(300)
->setPadding(10)
->setErrorCorrection('high')
->setForegroundColor(array('r' => 0, 'g' => 0, 'b' => 0, 'a' => 0))
->setBackgroundColor(array('r'=>255,'g'=>255,'b'=>255,'a'=>0))
->setLabel('Scan the code')
->setLabelFontSize(16)
->setImageType(QrCode::IMAGE_TYPE_PNG);
// now we can directly output the qrcode
header('Content-Type: '.$qrCode->getContentType());
$qrCode->render();
