<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<?php
/******************************************************************************

參數(shù)說明:
$max_file_size  : 上傳文件大小限制, 單位BYTE
$destination_folder : 上傳文件路徑
$watermark   : 是否附加水印(1為加水印,其他為不加水印);

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

//上傳文件類型列表
$uptypes=array(
    'image/jpg',
    'image/jpeg',
    'image/png',
    'image/pjpeg',
    'image/gif',
    'image/bmp',
    'image/x-png'
);

$max_file_size=2000000;     //上傳文件大小限制, 單位BYTE
$destination_folder="uploadimg/"; //上傳文件路徑
$watermark=1;      //是否附加水印(1為加水印,其他為不加水印);
$watertype=1;      //水印類型(1為文字,2為圖片)
$waterposition=1;     //水印位置(1為左下角,2為右下角,3為左上角,4為右上角,5為居中);
$waterstring="http://www.dbjr.com.cn/";  //水印字符串
$waterimg="xplore.gif";    //水印圖片
$imgpreview=1;      //是否生成預(yù)覽圖(1為生成,其他為不生成);
$imgpreviewsize=1/2;    //縮略圖比例
?>
<html>
<head>
<title>ZwelL圖片上傳程序</title>
<style type="text/css">
<!--
body
{
     font-size: 9pt;
}
input
{
     background-color: #66CCFF;
     border: 1px inset #CCCCCC;
}
-->
</style>
</head>

<body>
<form enctype="multipart/form-data" method="post" name="upform">
  上傳文件:
  <input name="upfile" type="file">
  <input type="submit" value="上傳"><br>
  允許上傳的文件類型為:<?=implode(', ',$uptypes)?>
</form>

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

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

    if(!in_array($file["type"], $uptypes))
    //檢查文件類型
    {
        echo "文件類型不符!".$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 "同名文件已經(jīng)存在了";
        exit;
    }

    if(!move_uploaded_file ($filename, $destination))
    {
        echo "移動(dòng)文件出錯(cuò)";
        exit;
    }

    $pinfo=pathinfo($destination);
    $fname=$pinfo[basename];
    echo " <font color=red>已經(jīng)成功上傳</font><br>文件名:  <font color=blue>".$destination_folder.$fname."</font><br>";
    echo " 寬度:".$image_size[0];
    echo " 長度:".$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("不支持的文件類型");
            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:   //加水印圖片
            $simage1 =imagecreatefromgif("xplore.gif");
            imagecopy($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;
        }

        //覆蓋原上傳文件
        imagedestroy($nimage);
        imagedestroy($simage);
    }

    if($imgpreview==1)
    {
    echo "<br>圖片預(yù)覽:<br>";
    echo "<img src=\"".$destination."\" width=".($image_size[0]*$imgpreviewsize)." height=".($image_size[1]*$imgpreviewsize);
    echo " alt=\"圖片預(yù)覽:\r文件名:".$destination."\r上傳時(shí)間:\">";
    }
}
?>
</body>
</html>