PHP5+UTF8多文件上传类

还有些功能没有加上去,如自动更名,图片处理等.可根据需要自己添加.
USE:
$up = new upfile(ROOT_PATH.data/.date(Ym,time()),array(gif,jpg,jpeg),true);
$fileimg = $up->upload($_FILES[img]);//返回上传后文件名数组,$_FILES[img]为上传的文件
可使用$up->log查看上传时信息.
<?php
//====================================================
// FileName: upfile.class.php
// Summary: 文件上传类
// Author: millken(迷路林肯)
// LastModifed: 2008-6-4
//====================================================
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 $errno = 0;
/* 构造函数
* (string)$savePath 文件保存路径，默认为$attachment_path
* (array)$extensionFileFormat 自定义上传文件的扩展名，未设置时为$ImageFileFormat $OtherFileFormat
* (bool)$overwrite 是否覆盖同名文件
*/
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)?$overwrite:false;
}
/*上传函数
* (array)$files 待上传的文件数组$_FILES[attach]
* (number)$maxSize 文件的最大字节数，默认为0不限制上传大小
*/
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 $filearray;
}
/*检测文件的类型
*(array)$files 文件数组
*/
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]);
}
}
}
}
/*生成上传目录
*
*/
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;
};
}
}
?>