PHP生成二维码(qrcode)

<?php
    require './phpqrcode/phpqrcode.php';
    set_time_limit(0);
        $value = '123'; //二维码内容   
        $errorCorrectionLevel = 'L';//容错级别   
        $matrixPointSize = 20;//生成图片大小   
        //生成二维码图片   
        QRcode::png($value,'/1.png',$errorCorrectionLevel, $matrixPointSize, 1);
</code>
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