php编程文件上传代码

来源：互联网发布：sql拼接引号编辑：程序博客网时间：2024/06/11 17:42
php编程文件上传代码（吴杨杨，王劲松）

<html>    <head>   <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />    <title>图片上传程序</title>    <?php    //上传文件类型列表    $uptypes=array(        'image/jpg',        'image/jpeg',        'image/png',        'image/gif',        'image/bmp',         'image/pjpeg',  $max_file_size=20000;     //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.35880.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);    $imgpreviewsize=1/1;    //缩略图比例    ?>      <style type="text/css">    body{ font-size: 14px; }    input{ background-color: white; border: 1px inset #CCCCCC;  }    </style>  </head>       <body>    <form enctype="multipart/form-data" method="post" name="upform">      上传文件:      <input name="upfile" type="file">      <input type="submit" value="上传"><br>      允许上传的文件类型为:<?php echo implode(', ',$uptypes) ?>    </form>       <?php    if ($_SERVER['REQUEST_METHOD'] == 'POST')    {         $file = $_FILES["upfile"];      $filename=$file["tmp_name"];        if (!is_uploaded_file($filename))        //是否存在文件        {             echo "图片不存在!";             exit;        }            if($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);        }                $image_size = getimagesize($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]-15,120,$image_size[1],$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 "<br>图片预览:<br>";        echo "<img src=\"".$destination."\" width=".($image_size[0]*$imgpreviewsize)." height=".($image_size[1]*$imgpreviewsize);        echo " alt=\"图片预览:\r文件名:".$destination."\r上传时间:\">";        }    }    ?>    </body>    </html>
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