
"Content-Type" content="text/html; charset=utf-8" />//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?>ZwelL图片上传程序><!--body{     font-size: 9pt;}input{     background-color: #66CCFF;     border: 1px inset #CCCCCC;}-->
"multipart/form-data" method="post" name="upform">  上传文件:  "upfile" type="file">  "submit" value="上传">
  允许上传的文件类型为:=implode(', ',$uptypes)?>
if ($_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"];    $image_size = getimagesize($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 " 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)    {        $iinfo=getimagesize($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 ".$destination."" width=".($image_size[0]*$imgpreviewsize)." height=".($image_size[1]*$imgpreviewsize);    echo " alt="图片预览:r文件名:".$destination."r上传时间:">";    }}?>
从PHP100上搜刮来的，功能很强大。几乎考虑到了每个细节，与大家分享！~~~
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PHP图片上传程序(单张)

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