一个给图片加水印的程序

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menory 2006-11-15 14:49:18 博主文章分类：PHP

尚未测试

CODE:

<?php
/******************************************************************************

参数说明:
$max_file_size : 上传文件大小限制, 单位BYTE
$destination_folder : 上传文件路径
$watermark : 是否附加水印(1为加水印,其他为不加水印);

使用说明:
1. 将PHP.INI文件里面的"extension=php_gd2.dll"一行前面的;号去掉,因为我们要用到GD库;
2. 将extension_dir =改为你的php_gd2.dll所在目录;
******************************************************************************/

//上传文件类型列表
$uptypes=array(
    'p_w_picpath/jpg',
    'p_w_picpath/jpeg',
    'p_w_picpath/png',
    'p_w_picpath/pjpeg',
    'p_w_picpath/gif',
    'p_w_picpath/bmp',
    'p_w_picpath/x-png'
);

$max_file_size=2000000;     //上传文件大小限制, 单位BYTE
$destination_folder="uploadimg/"; //上传文件路径
$watermark=1;      //是否附加水印(1为加水印,其他为不加水印);
$watertype=1;      //水印类型(1为文字,2为图片)
$waterposition=1;     //水印位置(1为左下角,2为右下角,3为左上角,4为右上角,5为居中);
$waterstring="http://www.xplore.cn/"; //水印字符串
$waterimg="xplore.gif";    //水印图片
$imgpreview=1;      //是否生成预览图(1为生成,其他为不生成);
$imgpreviewsize=1/2;    //缩略图比例
?>
<html>
<head>
<title>ZwelL图片上传程序</title>
<style type="text/css">

</style>
</head>

<body>
<form enctype="multipart/form-data" method="post" name="upform">
上传文件:
<input name="upfile" type="file">
<input type="submit" value="上传"><br>
允许上传的文件类型为:<?=implode(', ',$uptypes)?>
</form>

<?php
if ($_SERVER['REQUEST_METHOD'] == 'POST')
{
    if (!is_uploaded_file($_FILES["upfile"][tmp_name]))
    //是否存在文件
    {
         echo "图片不存在!";
         exit;
    }

    $file = $_FILES["upfile"];
    if($max_file_size < $file["size"])
    //检查文件大小
    {
        echo "文件太大!";
        exit;
    }

    if(!in_array($file["type"], $uptypes))
    //检查文件类型
    {
        echo "文件类型不符!".$file["type"];
        exit;
    }

    if(!file_exists($destination_folder))
    {
        mkdir($destination_folder);
    }

    $filename=$file["tmp_name"];
    $p_w_picpath_size = getp_w_picpathsize($filename);
    $pinfo=pathinfo($file["name"]);
    $ftype=$pinfo['extension'];
    $destination = $destination_folder.time().".".$ftype;
    if (file_exists($destination) && $overwrite != true)
    {
        echo "同名文件已经存在了";
        exit;
    }

    if(!move_uploaded_file ($filename, $destination))
    {
        echo "移动文件出错";
        exit;
    }

    $pinfo=pathinfo($destination);
    $fname=$pinfo[basename];
    echo " <font color=red>已经成功上传</font><br>文件名: <font color=blue>".$destination_folder.$fname."</font><br>";
    echo " 宽度:".$p_w_picpath_size[0];
    echo " 长度:".$p_w_picpath_size[1];
    echo "<br> 大小:".$file["size"]." bytes";

    if($watermark==1)
    {
        $iinfo=getp_w_picpathsize($destination,$iinfo);
        $np_w_picpath=p_w_picpathcreatetruecolor($p_w_picpath_size[0],$p_w_picpath_size[1]);
        $white=p_w_picpathcolorallocate($np_w_picpath,255,255,255);
        $black=p_w_picpathcolorallocate($np_w_picpath,0,0,0);
        $red=p_w_picpathcolorallocate($np_w_picpath,255,0,0);
        p_w_picpathfill($np_w_picpath,0,0,$white);
        switch ($iinfo[2])
        {
            case 1:
            $sp_w_picpath =p_w_picpathcreatefromgif($destination);
            break;
            case 2:
            $sp_w_picpath =p_w_picpathcreatefromjpeg($destination);
            break;
            case 3:
            $sp_w_picpath =p_w_picpathcreatefrompng($destination);
            break;
            case 6:
            $sp_w_picpath =p_w_picpathcreatefromwbmp($destination);
            break;
            default:
            die("不支持的文件类型");
            exit;
        }

p_w_picpathcopy($np_w_picpath,$sp_w_picpath,0,0,0,0,$p_w_picpath_size[0],$p_w_picpath_size[1]);
p_w_picpathfilledrectangle($np_w_picpath,1,$p_w_picpath_size[1]-15,80,$p_w_picpath_size[1],$white);

        switch($watertype)
        {
            case 1:   //加水印字符串
            p_w_picpathstring($np_w_picpath,2,3,$p_w_picpath_size[1]-15,$waterstring,$black);
            break;
            case 2:   //加水印图片
            $sp_w_picpath1 =p_w_picpathcreatefromgif("xplore.gif");
            p_w_picpathcopy($np_w_picpath,$sp_w_picpath1,0,0,0,0,85,15);
            p_w_picpathdestroy($sp_w_picpath1);
            break;
        }

        switch ($iinfo[2])
        {
            case 1:
            //p_w_picpathgif($np_w_picpath, $destination);
            p_w_picpathjpeg($np_w_picpath, $destination);
            break;
            case 2:
            p_w_picpathjpeg($np_w_picpath, $destination);
            break;
            case 3:
            p_w_picpathpng($np_w_picpath, $destination);
            break;
            case 6:
            p_w_picpathwbmp($np_w_picpath, $destination);
            //p_w_picpathjpeg($np_w_picpath, $destination);
            break;
        }

        //覆盖原上传文件
        p_w_picpathdestroy($np_w_picpath);
        p_w_picpathdestroy($sp_w_picpath);
    }

    if($imgpreview==1)
    {
    echo "<br>图片预览:<br>";
    echo "<img src=\"".$destination."\" width=".($p_w_picpath_size[0]*$imgpreviewsize)." height=".($p_w_picpath_size[1]*$imgpreviewsize);
    echo " alt=\"图片预览:\r文件名:".$destination."\r上传时间:\">";
    }
}
?>
</body>
</html>