php常用的文件上传类-可多文件上传-PHP源码

class My_Lib_upfile{

var $upfile, $upfile_name, $upfile_size;
# $upfile 临时文件名 $_FILES['tmp_name'] ,$upfile_name 文件名 $_FILES['name'] ,$upfile_size 文件大小$_FILES['size'];

var $new_upfile_name; # 上传后的文件名称 ;
var $fleth, $fileExtent; # 文件扩展名(类型) ;
var $f1, $f2, $f3; # 文件保存路径(多级) upfiles/2008-01/08/;
var $filename; # 文件(带路径) ;
var $filepath; #相对路径用来删除文件;
var $maxSize, $File_type; # 允许上传文件的大小 允许上传文件的类型 ;

var $BuildFile,$newFile,$File_width,$File_height,$rate;

function upfileclass($upfile,$upfile_name,$upfile_size){
$this->upfile = $upfile;
$this->upfile_name = $upfile_name;
$this->upfile_size = $upfile_size;
$this->new_upfile_name = $this->CreateNewFilename($this->upfile_name);
$this->f1 = "public/upload/images";
$this->f2 = $this->f1."/".date('Y')."-".date('m');
$this->f3 = $this->f2."/".date('d');
$this->filename = $this->f3 . "/" . $this->new_upfile_name;
$this->maxSize = 5000*1024; # 文件大小 5000KB
$this->File_type = "gif/jpg/jpeg/png/bmp"; # 允许上传的文件类型
}

# 创建新文件名 (原文件名)
function CreateNewFilename($file_name){
$this->fleth = explode(".",$file_name);
$this->fileExtent = $this->fleth[(int)count($this->fleth)-1]; # 获取文件后缀;
$tmps教程tr = date('Ymd').rand(0,time()) . "." .$this->fileExtent; # 创建新文件名;
return $tmpstr;
}

# 检测文件类型是否正确
function chk_fileExtent(){
$iwTrue = 0;
$fle = explode("/",$this->File_type);
for($i=0; $i if($this->fileExtent == $fle[$i]){
$iwTrue = (int) $iwTrue + 1;
}
}
if( $iwTrue == 0 ){
$this->msg("文件不符合 ".$this->File_type." 格式!");
}
}

# 提示错误信息并终止操作
function msg($Error){
echo " ";
die();
}

# 保存文件
function savefile(){
$this->chk_fileExtent();
$this->chk_fileSize();
$this->CreateFolder( "./".$this->f1 );
$this->CreateFolder( "./".$this->f2 );
$this->CreateFolder( "./".$this->f3 );
return $this->chk_savefile();
}

# 检测上传结果是否成功
function chk_savefile(){
$copymsg = copy($this->upfile,"./".$this->filename);
if( $copymsg ){
return $this->filename;
}
else{
$this->msg("文件上传失败! 请重新上传! ");
}
}

# 创建文件夹
function CreateFolder($foldername){
if( !is_dir($foldername) ){
mkdir($foldername,0777);
}
}

# 检测文件大小
function chk_fileSize(){
if( $this->upfile_size > $this->maxSize ){
$this->msg("目标文件不能大于". $this->maxSize/1024 ." KB");
}
}

# 删除文件($filePath 文件相对路径)
function Deletefile($filePath){
if( !is_file($filePath) ){
return false;
}
else{
$ending = @unlink($filePath);
return $ending;
}
}

}
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