PHP5+UTF8多文件上传类

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PHP5+UTF8多文件上传类

<?php
//====================================================
// FileName: upfile.class.php
// Summary: 文件上传类
// Author: millken(迷路林肯)
// LastModifed: 2008-6-4
// copyright (c)2008 millken@gmail.com
//====================================================
if(!defined('OK'))exit(__FILE__.'Access Denied');
class upfile {
public $ExtensionFileFormat=array();
public $returninfo=array();

private $ImageFileFormat=array('gif','bmp','jpg','jpe','jpeg','png');
private $OtherFileFormat=array('zip','pdf','rar','xls','doc','ppt','csv');
private $savePath;
private $attachment_path='./upfiles/';
private $overwrite=false; # 同名时是否覆盖
private $maxSize=0; # 文件最大字节，为0时不限制大小
private $ext;
private $errno=0;

public function __construct($savePath='',$extensionFileFormat=array(),$overwrite=false) {
$this->savePath=empty($savePath)?$this->attachment_pathsavePath.'/';
$this->extensionFileFormat=is_array($extensionFileFormat)?$extensionFileFormat:array();
$this->overwrite=is_bool($overwrite)?$overwrite:false;
}

public function upload($files,$maxSize=0) {
$this->maxSize=is_numeric($maxSize)?$maxSize:0;
if(isset($files) && is_array($files)) {
if(is_array($files['name'])) {
foreach($files as $key=> $var) {
foreach($var as $id=> $val) {
$attachments[$id][$key]=$val;
}
}
} else {
$attachments[]=$files;
}
}
self::check_file_type($attachments);
if(empty($this->filelist)) {
$this->log .="待上传的文件列表为空。\n";
return array();
}
if(!self::makeDirectory() || !@is_writable($this->savePath)) {
$this->log .=$this->savePath . "不能创建或其权限为不可写。\n";
return array();
}
$filearray=array();
foreach($this->filelist as $k=>$f) {
if($this->maxSize && $f['size']>$this->maxSize) {
$this->log .=$f['name'] . "其大小超过了设定的值：" . $this->maxSize ."\n";
}elseif($this->overwrite==false && file_exists($this->savePath . $f['name'])) {
$this->log .=$f['name'] . "已经存在于目录：" . $this->savePath . "\n";
}else{
@unlink($this->savePath . $f['name']);
if(@move_uploaded_file($f['tmp_name'],$this->savePath . mb_convert_encoding($f['name'],'gbk','utf-8'))) {//如果不进行编码转换，中文将无法支持
$this->log .=$f['name'] . "成功上传到目录：". $this->savePath ."\n";
$filearray[$k]=$this->savePath . $f['name'];
}else{
$this->log .=$f['name'] . "上传失败。\n";
}
}
}
return $filearray;
}

private function check_file_type($files) {
$this->filelist=array();
foreach($files as $key=>$file) {
if($file['error']==0) {
$ext=strtolower(substr($file['name'], strrpos($file['name'], '.') + 1));
$str=@file_get_contents($file['tmp_name'],FALSE,NULL,0,20);
if((in_array($ext,array('jpg','jpeg')) && substr($str ,0, 3) !=="\xFF\xD8\xFF") || ($ext=='gif' && substr($str ,0, 4) !=='GIF8') || ($ext=='png' && substr($str ,0, 8) !=="\x89\x50\x4E\x47\x0D\x0A\x1A\x0A") || ($ext=='bmp' && substr($str ,0, 2) !=='BM') || ($ext=='swf' && (substr($str ,0, 3) !=='CWS' || substr($str ,0, 3) !=='FWS')) || ($ext=='zip' && substr($str ,0, 4) !=="PK\x03\x04") || ($ext=='rar' && substr($str ,0, 4) !=='Rar!') || ($ext=='pdf' && substr($str ,0, 4) !=="\x25PDF") || ($ext=='chm' && substr($str ,0, 4) !=='ITSF') || ($ext=='rm' && substr($str ,0, 4) !=="\x2ERMF") || ($ext=='exe' && substr($str ,0, 2) !=="MZ") || (in_array($ext,array('doc','xls','ppt')) && substr($str ,0, 4) !=="\xD0\xCF\x11\xE0")) {
$this->log .=$file['name'] . "文件类型与文件内容不符合。\n";
}elseif((!empty($this->extensionFileFormat) && in_array($ext,$this->extensionFileFormat)) || (empty($this->extensionFileFormat) && (in_array($ext,$this->ImageFileFormat) || in_array($ext,$this->OtherFileFormat)))) {
$this->filelist[$key]=$file;
}else{
$this->log .=$file['name'] . "不符合上传文件的类型。\n";
@unlink($file['tmp_name']);
}
}
}
}

private function makeDirectory() {
$directoryName=str_replace("\\","/", $this->savePath);
$dirNames=explode('/', $directoryName);
$total=count($dirNames);
$temp='';
for($i=0; $i<$total; $i++)
{
$temp .=$dirNames[$i].'/';
if (!is_dir($temp))
{
$oldmask=@umask(0);
if (!@mkdir($temp, 0777)) return false;
@umask($oldmask);
}
};
if(is_dir($this->savePath)) {
return true;
} else {
return false;
};
}
}

?>

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