php图片上传并加水印的例子

有关php图片上传与php加水印的实例代码，一个完整的php上传图片的例子，需要的朋友参考下。

1、send.html

  
 
File Upload
  
  Select a file to upload:

2，接收 img_receive.php

已经成功上传
文件名:  ".$destination_folder.$fname."
";  
    echo " 宽度:".$image_size[0];  
    echo " 长度:".$image_size[1];  
    echo "
 大小:".$file["size"]." bytes";  
    if($watermark==1)//1为添加水印  
    {  
        $iinfo=getimagesize($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($simage);  
    }  
    if($imgpreview==1)  
    {  
    echo "
图片预览:
";  
    echo "";  
    }  
}