PHP5+UTF8多文件上传类
author:一佰互联 2019-05-01   click:174

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)) {
$this->log .= "待上传的文件列表为空。 ";
return array();
}
if(!self::makeDirectory() || !@is_writable($this->savePath)) {
$this->log .= $this->savePath . "不能创建或其权限为不可写。 ";
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:" . $this->maxSize ." ";
}elseif($this->overwrite == false && file_exists($this->savePath . $f["name"])) {
$this->log .= $f["name"] . "已经存在于目录:" . $this->savePath . " ";
}else{
@unlink($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 ." ";
$filearray[$k] = $this->savePath . $f["name"];
}else{
$this->log .= $f["name"] . "上传失败。 ";
}
}
}
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 .= $file["name"] . "文件类型与文件内容不符合。 ";
}elseif((!empty($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 .= $file["name"] . "不符合上传文件的类型。 ";
@unlink($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;
};
}
}
?>