php文件上传简单实例

时间：2015-01-23 来源：西部数据作者：西部数据

txt,rar,zip,jpg,jpeg,gif,png,swf,wmv,avi,wma,mp3,mid,jar,jad,exe,html,htm,css,js,doc上传,音乐文件等都可以,实例代码如下:

<!doctype html public "-//w3c//dtd xhtml 1.0 transitional//en" "http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

<meta http-equiv="content-type" content="text/html; charset=utf-8" />

<title>php文件上传</title>

</head>

<body>

<form action="uploadsir.php" method="post"  enctype="multipart/form-data"><input name="filedata" type="file" id="filedata" />

<input type="submit" name="submit" value="上传" /></form>

<?php

if(!$_post)die();

$state=uploadfile('filedata');

if($state['err']){

die('<script>alert("上传出错：'.$state['msg'].'");history.go(-1);</script>');

}

echo'<object type="application/x-shockwave-flash" data="template/images/copy.swf?u='.weburl.$state['msg'].'" width="100" height="40">

<param name="movie" value="copy.swf?u='.weburl.$state['msg'].'" />';

function uploadfile($inputname)

{

$immediate=$_get['immediate'];

$attachdir='../pictures';//上传文件保存路径，结尾不要带/

$urldir="../pictures";

$dirtype=2;//1:按天存入目录 2:按月存入目录 3:按扩展名存目录  建议使用按天存

$maxattachsize=2097152;//最大上传大小，默认是2m

$upext='txt,rar,zip,jpg,jpeg,gif,png,swf,wmv,avi,wma,mp3,mid,jar,jad,exe,html,htm,css,js,doc';//上传扩展名



$err = "";

$msg = "";

$upfile=$_files[$inputname];

if(!emptyempty($upfile['error']))

{

  switch($upfile['error'])

  {

   case '1':

    $err = '文件大小超过了php.ini定义的upload_max_filesize值';

    break;

   case '2':

    $err = '文件大小超过了html定义的max_file_size值';

    break;

   case '3':

    $err = '文件上传不完全';

    break;

   case '4':

    $err = '无文件上传';

    break;

   case '6':

    $err = '缺少临时文件夹';

    break;

   case '7':

    $err = '写文件失败';

    break;

   case '8':

    $err = '上传被其它扩展中断';

    break;

   case '999':

   default:

    $err = '无有效错误代码';

  }

}

elseif(emptyempty($upfile['tmp_name']) || $upfile['tmp_name'] == 'none')$err = '无文件上传';

else

{

   $temppath=$upfile['tmp_name'];

   $fileinfo=pathinfo($upfile['name']);

   $extension=$fileinfo['extension'];

   if(preg_match('/'.str_replace(',','|',$upext).'/i',$extension))

   {

    $filesize=filesize($temppath);

    if($filesize > $maxattachsize)$err='文件大小超过'.$maxattachsize.'字节';

    else

    {

     switch($dirtype)

     {

      case 1: $attach_subdir = 'day_'.date('ymd'); break;

      case 2: $attach_subdir = 'month_'.date('ym'); break;

      case 3: $attach_subdir = 'ext_'.$extension; break;

     }

     $attach_dir = $attachdir.'/'.$attach_subdir;

     if(!is_dir($attach_dir))

     {

      @mkdir($attach_dir, 0777);

      @fclose(fopen($attach_dir.'/index.htm', 'w'));

     }

     php_version < '4.2.0' && mt_srand((double)microtime() * 1000000);

     $filename=date("ymdhis").mt_rand(1000,9999).'.'.$extension;

     $target = $urldir.'/'.$attach_subdir.'/'.$filename;



     move_uploaded_file($upfile['tmp_name'],$target);

     if($immediate=='1')$target='!'.$target;

     $msg=str_replace('../',"",$target);

    }//开源代码phpfensi.com

   }

   else $err='上传文件扩展名必需为：'.$upext;

   @unlink($temppath);

}

return array('err'=>$err,'msg'=>$msg);

}

?>

</body>

</html>