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PHP生成二维码demo
滴滴云服务器,限时包月0.9元,为开发者而生>>>   

演示下载可以参考这里:http://www.erdangjiade.com/php/247.html

完整代码如下:

HTML

<input type="text" class="input" id="txt" value="http://www.erdangjiade.com" 
/> 
<label for="logo"> 
    <input type="checkbox" name="logo" id="haslogo" /> 
    带LOGO 
</label> 
<input type="button" id="sub_btn" class="btn" value="提交" />

jQuery

$(function() { 
    $("#sub_btn").click(function() { 
        var txt = $("#txt").val(); 
        var haslogo = $("#haslogo").attr("checked"); 
        var logo = haslogo ? 1 : 0; 
        if (txt.length < 1 || txt.length > 200) { 
            alert("请输入内容!"); 
            return false; 
        } 
        $.post("ajax.php", { 
            mytxt: encodeURIComponent(txt), 
            mylogo: logo 
        }, 
        function(msg) { 
            $("#code").html(msg); 
        }); 
    }); 
});

PHP

include 'phpqrcode.php'; 
 
$value = isset($_POST['mytxt']) ? $_POST['mytxt'] : ""; //二维码内容  
$errorCorrectionLevel = 'L'; //容错级别  
$matrixPointSize = 6; //生成图片大小  
$mylogo = isset($_POST['mylogo']) ? $_POST['mylogo'] : ""; 
//生成二维码图片  
QRcode::png($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  
 
$logo_rs = "../../../../modals/temp/".time().".png";//文件存放路径 
if ($mylogo == 1) { //带有logo 
    $QR = imagecreatefromstring(file_get_contents($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 - $logo_qr_width) / 2; 
    imagecopyresampled($QR, $logo, $from_width, $from_width, 0, 0, $logo_qr_width, $logo_qr_height, $logo_width, $logo_height); 
    //输出图片  
    imagepng($QR, $logo_rs); 
    //重新组合图片并调整大小  
} else { //不带logo 
    QRcode::png($value, $logo_rs, $errorCorrectionLevel, $matrixPointSize, 2); 
} 
echo '<img src='.$logo_rs.'>';
PHP
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