PHP5+UTF8多文件上传类

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PHP5+UTF8多文件上传类 时间：2015-06-28 00:00 来源：IT猫扑网|http://www.itmop.com/ 作者：网管联盟 我要评论(0)

根据需要写了个PHP5+UTF8环境的文件上传类,支持多文件上传,并对常用文件的类型进行MIME检测.

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
// 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;

/* 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) !== &xFFxD8xFF&) || ($ext == 'gif' && substr($str ,0, 4) !== 'GIF8') || ($ext == 'png' && substr($str ,0, 8) !== &x89x50x4Ex47x0Dx0Ax1Ax0A&) || ($ext == 'bmp' && substr($str ,0, 2) !== 'BM') || ($ext == 'swf' && (substr($str ,0, 3) !== 'CWS' || substr($str ,0, 3) !== 'FWS')) || ($ext == 'zip' && substr($str ,0, 4) !== &PKx03x04&) || ($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) !== &xD0xCFx11xE0&)) {
$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;
};
}
}

关键词标签：上传,文件,this->p

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