php给图片加水印与上传图片加水印php类

2024-09-04 11:44:11

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/*

* 功能：PHP图片水印 (水印支持图片或文字)

* 参数：

* $groundImage 背景图片，即需要加水印的图片，暂只支持GIF,JPG,PNG格式；

* $waterPos 水印位置，有10种状态，0为随机位置；

* 1为顶端居左，2为顶端居中，3为顶端居右；

* 4为中部居左，5为中部居中，6为中部居右；

* 7为底端居左，8为底端居中，9为底端居右；

* $waterImage 图片水印，即作为水印的图片，暂只支持GIF,JPG,PNG格式；

* $waterText 文字水印，即把文字作为为水印，支持ASCII码，不支持中文；

* $textFont 文字大小，值为1、2、3、4或5，默认为5；

* $textColor 文字颜色，值为十六进制颜色值，默认为#FF0000(红色)；

*

* 注意：Support GD 2.0，Support FreeType、GIF Read、GIF Create、JPG 、PNG

* $waterImage 和 $waterText 最好不要同时使用，选其中之一即可，优先使用 $waterImage。

* 当$waterImage有效时，参数$waterString、$stringFont、$stringColor均不生效。

* 加水印后的图片的文件名和 $groundImage 一样。

* 作者：longware @ 2004-11-3 14:15:13

*/

function imageWaterMark($groundImage,$waterPos=0,$waterImage=”",$waterText=”",$textFont=5,$textColor=”#FF0000″)

{

$isWaterImage = FALSE;

$formatMsg = “暂不支持该文件格式，请用图片处理软件将图片转换为GIF、JPG、PNG格式。”;

//读取水印文件

if(!emptyempty($waterImage) && file_exists($waterImage))

{

$isWaterImage = TRUE;

$water_info = getimagesize($waterImage);

$water_w = $water_info[0];//取得水印图片的宽

$water_h = $water_info[1];//取得水印图片的高

switch($water_info[2])//取得水印图片的格式

{

case 1:$water_im = imagecreatefromgif($waterImage);break;

case 2:$water_im = imagecreatefromjpeg($waterImage);break;

case 3:$water_im = imagecreatefrompng($waterImage);break;

default:die($formatMsg);

}

}

//读取背景图片

if(!emptyempty($groundImage) && file_exists($groundImage))

{

$ground_info = getimagesize($groundImage);

$ground_w = $ground_info[0];//取得背景图片的宽

$ground_h = $ground_info[1];//取得背景图片的高

switch($ground_info[2])//取得背景图片的格式

{

case 1:$ground_im = imagecreatefromgif($groundImage);break;

case 2:$ground_im = imagecreatefromjpeg($groundImage);break;

case 3:$ground_im = imagecreatefrompng($groundImage);break;

default:die($formatMsg);

}

}

else

{

die(”需要加水印的图片不存在！”);

}

//水印位置

if($isWaterImage)//图片水印

{

$w = $water_w;

$h = $water_h;

$label = “图片的”;

}

else//文字水印

{

$temp = imagettfbbox(ceil($textFont*5),0,”./cour.ttf”,$waterText);//取得使用 TrueType 字体的文本的范围

$w = $temp[2] - $temp[6];

$h = $temp[3] - $temp[7];

unset($temp);

$label = “文字区域”;

}

if( ($ground_w<$w) || ($ground_h<$h) )

{

echo “需要加水印的图片的长度或宽度比水印”.$label.”还小，无法生成水印！”;

return;

}

switch($waterPos)

{

case 0://随机

$posX = rand(0,($ground_w - $w));

$posY = rand(0,($ground_h - $h));

break;

case 1://1为顶端居左

$posX = 0;

$posY = 0;

break;

case 2://2为顶端居中

$posX = ($ground_w - $w) / 2;

$posY = 0;

break;

case 3://3为顶端居右

$posX = $ground_w - $w;

$posY = 0;

break;

case 4://4为中部居左

$posX = 0;

$posY = ($ground_h - $h) / 2;

break;

case 5://5为中部居中

$posX = ($ground_w - $w) / 2;

$posY = ($ground_h - $h) / 2;

break;

case 6://6为中部居右

$posX = $ground_w - $w;

$posY = ($ground_h - $h) / 2;

break;

case 7://7为底端居左

$posX = 0;

$posY = $ground_h - $h;

break;

case 8://8为底端居中

$posX = ($ground_w - $w) / 2;

$posY = $ground_h - $h;

break;

case 9://9为底端居右

$posX = $ground_w - $w;

$posY = $ground_h - $h;

break;

default://随机

$posX = rand(0,($ground_w - $w));

$posY = rand(0,($ground_h - $h));

break;

}

//设定图像的混色模式

imagealphablending($ground_im, true);

if($isWaterImage)//图片水印

{

imagecopy($ground_im, $water_im, $posX, $posY, 0, 0, $water_w,$water_h);//拷贝水印到目标文件

}

else//文字水印

{

if( !emptyempty($textColor) && (strlen($textColor)==7) )

{

$R = hexdec(substr($textColor,1,2));

$G = hexdec(substr($textColor,3,2));

$B = hexdec(substr($textColor,5));

}

else

{

die(”水印文字颜色格式不正确！”);

}

imagestring ( $ground_im, $textFont, $posX, $posY, $waterText, imagecolorallocate($ground_im, $R, $G, $B));

}

//生成水印后的图片

@unlink($groundImage);

switch($ground_info[2])//取得背景图片的格式

{

case 1:imagegif($ground_im,$groundImage);break;

case 2:imagejpeg($ground_im,$groundImage);break;

case 3:imagepng($ground_im,$groundImage);break;

default:die($errorMsg);

}

//释放内存

if(isset($water_info)) unset($water_info);

if(isset($water_im)) imagedestroy($water_im);

unset($ground_info);

imagedestroy($ground_im);

}

//—————————————————————————————

$id=$_REQUEST['id'];

$num = count($_FILES['userfile']['name']);

print_r($_FILES['userfile']);

print_r($_FILES['userfile']['name']);

echo $num;

echo “<bR>”;

if(isset($id)){

for($i=0;$i<$id;$i++){

if(isset($_FILES) && !emptyempty($_FILES['userfile']) && $_FILES['userfile']['size']>0)

{

$uploadfile = “./”.time().”_”.$_FILES['userfile'][name][$i];

echo “<br>”;

echo $uploadfile;

if (copy($_FILES['userfile']['tmp_name'][$i], $uploadfile))

{

echo “OK<br>”;

//文字水印

//imageWaterMark($uploadfile,5,”",”HTTP://www.lvye.info”,5,”#cccccc“);

//图片水印

$waterImage=”logo_ok1.gif”;//水印图片路径

imageWaterMark($uploadfile,9,$waterImage);

echo “<img src=”".$uploadfile.”” border=”0”>”;

}

else

{

echo “Fail<br>”;

}

}

}

}

?>

<form enctype=”multipart/form-data” method=”POST”>

<?php

for($a=0;$a<$id;$a++){

echo “文件: <input name=”userfile[]” type=”file”><br>”;

}

?>

<input type=”submit” value=”上传”>

</form>

?>

//下面这段代码是一段图片上传并且给上传的图片加水印

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;

3. http://www.111cn.net/php.asp;

****************************************************/

//上传文件类型列表

$uptypes=array(

    'image/jpg',

    'image/jpeg',

    'image/png',

    'image/pjpeg',

    'image/gif',

    'image/bmp',

    'image/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教程">



</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www.111cn.net!";

         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"];

    $image_size = getimagesize($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:".$image_size[0];

    echo " 长度:".$image_size[1];

    echo "<br> 大小:".$file["size"]." bytes";

    if($watermark==1)

    {

        $iinfo=getimagesize($destination,$iinfo);

        $nimage=imagecreatetruecolor($image_size[0],$image_size[1]);

        $white=imagecolorallocate($nimage,255,255,255);

        $black=imagecolorallocate($nimage,0,0,0);

        $red=imagecolorallocate($nimage,255,0,0);

        imagefill($nimage,0,0,$white);

        switch ($iinfo[2])

        {

            case 1:

            $simage =imagecreatefromgif($destination);

            break;

            case 2:

            $simage =imagecreatefromjpeg($destination);

            break;

            case 3:

            $simage =imagecreatefrompng($destination);

            break;

            case 6:

            $simage =imagecreatefromwbmp($destination);

            break;

            default:

            die("不支持的文件类型");

            exit;

        }

        imagecopy($nimage,$simage,0,0,0,0,$image_size[0],$image_size[1]);

        imagefilledrectangle($nimage,1,$image_size[1]-15,80,$image_size[1],$white);

        switch($watertype)

        {

            case 1:   //加水印字符串

            imagestring($nimage,2,3,$image_size[1]-15,$waterstring,$black);

            break;

            case 2:   //加水印图片

            $simage1 =imagecreatefromgif("xplore.gif");

            imagecopy($nimage,$simage1,0,0,0,0,85,15);

            imagedestroy($simage1);

            break;

        }

        switch ($iinfo[2])

        {

            case 1:

            //imagegif($nimage, $destination);

            imagejpeg($nimage, $destination);

            break;

            case 2:

            imagejpeg($nimage, $destination);

            break;

            case 3:

            imagepng($nimage, $destination);

            break;

            case 6:

            imagewbmp($nimage, $destination);

            //imagejpeg($nimage, $destination);

            break;

        }

        //覆盖原上传文件

        imagedestroy($nimage);

        imagedestroy($simage);

    } //开源代码Vevb.com

    if($imgpreview==1)

    {

    echo "<br>图片预览:<br>";

    echo "<img src="".$destination."" width=".($image_size[0]*$imgpreviewsize)." height=".($image_size[1]*$imgpreviewsize);

    echo " alt="图片预览: 文件名:".$destination." www.111cn.net上传时间:">";

    }

}