php制作中间带自己定义图片二维码的方法

1，首先你必须生成二维码具体代码如下：

class QRCode{ 
public $w; 
public $h; 
public $s; 
function __construct($w1,$h1,$s1){ 
$this->w = $w1; 
$this->h = $h1; 
$this->s = $s1; 
$this->outimgase(); 
} 
function qrcode(){ 
$post_data = array(); 
$post_data['cht'] = 'qr'; 
$post_data['chs'] = $this->w."x".$this->h; 
$post_data['chl'] = $this->s; 
$post_data['choe'] = "UTF-8"; 
$url = "http://chart.apis.google.com/chart"; 
$data_Array = array(); 
foreach($post_data as $key => $value) 
{ 
$data_Array[] = $key.'='.$value; 
} 
$data = implode("&",$data_Array); 
$ch = curl_init(); 
curl_setopt($ch, CURLOPT_POST, 1); 
curl_setopt($ch, CURLOPT_HEADER, 0); 
curl_setopt($ch, CURLOPT_URL, $url); 
curl_setopt($ch, CURLOPT_POSTFIELDS,$data); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 
$result = curl_exec($ch); 
curl_close($ch); 
return $result; 
} 
function outimgase(){ 
echo $this->qrcode(); 
} 
} 
header("Content-type:image/png"); 
$t = new QRCode(300,300,"tianxin");

2，然后通过一个php文件将二维码和你的目的图片画在一起代码如下：

<?php

$surl = $_POST["url"]; 
function GrabImage($url,$filename="") { 
if($url==""):return false;endif; 
if($filename=="") { 
$ext=strrchr($url,"."); 
if($ext!=".gif" && $ext!=".jpg"):return false;endif; 
$filename=date("dMYHis").$ext; 
} 
ob_start(); 
readfile($url); 
$img = ob_get_contents(); 
ob_end_clean(); 
$size = strlen($img); 
$fp2=@fopen($filename, "a"); 
fwrite($fp2,$img); 
fclose($fp2); 
return $filename; 
} 
$source = GrabImage("http://localhost/QRCode/QRCode.php","Myqrcode.png"); 
$water =GrabImage($surl,"t.png"); 
function getImageInfo($img){ 
$imageInfo = getimagesize($img); 
if ($imageInfo !== false) { 
$imageType = strtolower(substr(image_type_to_extension($imageInfo[2]), 1)); 
$imageSize = filesize($img); 
$info = array( 
"width" => $imageInfo[0], 
"height" => $imageInfo[1], 
"type" => $imageType, 
"size" => $imageSize, 
"mime" => $imageInfo['mime'] 
); 
return $info; 
} else { 
return false; 
} 
} 
function thumb($image, $thumbname, $type='', $maxWidth=200, $maxHeight=50, $interlace=true) { 
// 获取原图信息 
$info = getImageInfo($image); 
if ($info !== false) { 
$srcWidth = $info['width']; 
$srcHeight = $info['height']; 
$type = empty($type) ? $info['type'] : $type; 
$type = strtolower($type); 
$interlace = $interlace ? 1 : 0; 
unset($info); 
$scale = min($maxWidth / $srcWidth, $maxHeight / $srcHeight); // 计算缩放比例 
if ($scale >= 1) { 
// 超过原图大小不再缩略 
$width = $srcWidth; 
$height = $srcHeight; 
} else { 
// 缩略图尺寸 
$width = (int) ($srcWidth * $scale); 
$height = (int) ($srcHeight * $scale); 
} 
// 载入原图 
$createFun = 'ImageCreateFrom' . ($type == 'jpg' ? 'jpeg' : $type); 
$srcImg = $createFun($image); 
//创建缩略图 
if ($type != 'gif' && function_exists('imagecreatetruecolor')) 
$thumbImg = imagecreatetruecolor($width, $height); 
else 
$thumbImg = imagecreate($width, $height); 
// 复制图片 
if (function_exists("ImageCopyResampled")) 
imagecopyresampled($thumbImg, $srcImg, 0, 0, 0, 0, $width, $height, $srcWidth, $srcHeight); 
else 
imagecopyresized($thumbImg, $srcImg, 0, 0, 0, 0, $width, $height, $srcWidth, $srcHeight); 
if ('gif' == $type || 'png' == $type) { 
//imagealphablending($thumbImg, false);//取消默认的混色模式 
//imagesavealpha($thumbImg,true);//设定保存完整的 alpha 通道信息 
$background_color = imagecolorallocate($thumbImg, 0, 255, 0); // 指派一个绿色 
imagecolortransparent($thumbImg, $background_color); // 设置为透明色，若注释掉该行则输出绿色的图 
} 
// 对jpeg图形设置隔行扫描 
if ('jpg' == $type || 'jpeg' == $type) 
imageinterlace($thumbImg, $interlace); // 生成图片 
$imageFun = 'image' . ($type == 'jpg' ? 'jpeg' : $type); 
$imageFun($thumbImg, $thumbname); 
imagedestroy($thumbImg); 
imagedestroy($srcImg); 
return $thumbname; 
} 
return false; 
} 
function water($source, $thumb, $savename="", $alpha=100){ 
//检查文件是否存在 
if (!file_exists($source) || !file_exists($thumb)) 
return false; 
//图片信息 
$sInfo = getImageInfo($source); 
$water = thumb($thumb,"wy.jpg","jpg",$sInfo["width"]/4,$sInfo["height"]/4); 
$wInfo = getImageInfo($water); 
//如果图片小于水印图片，不生成图片 
if ($sInfo["width"] < $wInfo["width"] || $sInfo['height'] < $wInfo['height']) 
return false; 
//建立图像 
$sCreateFun = "imagecreatefrom" . $sInfo['type']; 
$sImage = $sCreateFun($source); 
$wCreateFun = "imagecreatefrom" . $wInfo['type']; 
$wImage = $wCreateFun($water); 
//设定图像的混色模式 
imagealphablending($wImage, true); 
//图像位置,默认为右下角右对齐 
// $posY = $sInfo["height"] - $wInfo["height"]; 
// $posX = $sInfo["width"] - $wInfo["width"]; 
$posY = ($sInfo["height"] - $wInfo["height"])/2; 
$posX = ($sInfo["width"] - $wInfo["width"])/2; 
//生成混合图像 
imagecopymerge($sImage, $wImage, $posX, $posY, 0, 0, $wInfo['width'], $wInfo['height'], $alpha); 
//输出图像 
$ImageFun = 'Image' . $sInfo['type']; 
//如果没有给出保存文件名，默认为原图像名 
if (!$savename) { 
$savename = $source; 
@unlink($source); 
} 
//保存图像 
$ImageFun($sImage, $savename); 
imagedestroy($sImage); 
} 
water($source,$water);

在上面的代码中用3个函数 GrabImage（）函数是将生成二维码的文件转化成图片 接下来的函数就是处理图片的缩放 将目的图片添加到二位上。

3，在来一个入口文件index.html 代码如下：

<html> 
<head> 
<title> 
中间可以自己定义图片的二维码生成器 
</title> 
</head> 
<body style="margin:0px; padding:0px; font-family:宋体; font-size:12px;"> 
<form action="<span style="font-size:18px;"><strong><span style="color:#FF0000;">注意提交的URL</span></strong></span>" method="post"> 
<div style="width:500px; height:200px; background-color:#CCCCCC; margin:auto; border-width:1px; border-color:#000000;" align="center"> 
<h1 style="margin:0px; padding:20px; font-family:宋体; font-size:12px;">中间可以自己定义图片的二维码生成器</h1> 
<table width="500" border="0"> 
<tr> 
<td width="250" height="40" align="center" valign="middle">二维码要生的内容：</td> 
<td width="250" height="40" align="center" valign="middle"> 
<label> 
<input type="text" name="content" value=""> 
</label> 
</td> 
</tr> 
<tr> 
<td width="250" height="40" align="center" valign="middle">希望能添加自己的图片地址：</td> 
<td width="250" height="40" align="center" valign="middle"> 
<label> 
<input type="text" name="url" value=""> 
</label> 
</td> 
</tr> 
<tr> 
<td height="40" colspan="2" align="center" valign="middle"> 
<label> 
<input type="submit" name="Submit" value="生成我想要的二维码"> 
</label> 
</td> 
</tr> 
</table> </div> 
</body> 
</html>