PHP common File Upload class-can upload multiple files

<?php

Class my_lib_upfile{

var $upfile, $upfile _name, $upfile _size;
# $upfile temporary filename $_files[' tmp_name '], $upfile _name filename $_files[' name ', $upfile _size file size $_files[' size '];

var $new _upfile_name; # The file name after uploading;
var $fleth, $fileExtent; # File name extension (type);
var $f 1, $f 2, $f 3; # File save path (multilevel) upfiles/2008-01/08/;
var $filename; # file (with path);
var $filepath; #相对路径用来删除文件;
var $maxSize, $File _type; # Allow upload file size to allow the type of file to be uploaded;

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; # File Size 5000KB
$this->file_type = "Gif/jpg/jpeg/png/bmp"; # File types allowed to upload
}

# Create new file name (original file name)
function Createnewfilename ($file _name) {
$this->fleth = Explode (".", $file _name);
$this->fileextent = $this->fleth[(int) count ($this->fleth)-1]; # get file suffix;
$tmps Tutorial tr = date (' YMD '). Rand (0,time ()).    ".". $this->fileextent; # Create a new file name;
return $tmpstr;
}

# Detect file type is correct
function Chk_fileextent () {
$iwTrue = 0;
$fle = Explode ("/", $this->file_type);
For ($i =0 $i < count ($fle); $i + +) {
if ($this->fileextent = = $fle [$i]) {
$iwTrue = (int) $iwTrue + 1;
}
}
if ($iwTrue = = 0) {
$this->msg ("File not compliant". $this->file_type. "Format!");
}
}

# Prompts for error message and terminates operation
function msg ($Error) {
echo "<script language=" JavaScript tutorial ">";
echo ' Alert ('. $Error. ');
echo "Window.history.back ();";
echo "</script>";
Die ();
}

# Save File
function SaveFile () {
$this->chk_fileextent ();
$this->chk_filesize ();
$this->createfolder ("./". $this->f1);
$this->createfolder ("./". $this->f2);
$this->createfolder ("./". $this->f3);
return $this->chk_savefile ();
}

# Detect if upload results are successful
function Chk_savefile () {
$copymsg = Copy ($this->upfile, "./". $this->filename);
if ($copymsg) {
return $this->filename;
}
else{
$this->msg ("File upload failed!") Please upload it again! ");
}
}

# Create a folder
function CreateFolder ($foldername) {
if (!is_dir ($foldername)) {
mkdir ($foldername, 0777);
}
}

# Detect File Size
function Chk_filesize () {
if ($this->upfile_size > $this->maxsize) {
$this->msg ("Destination file cannot be greater than". $this->maxsize/1024. " KB ");
}
}

# Delete file ($filePath file relative path)
function DeleteFile ($filePath) {
if (!is_file ($filePath)) {
return false;
}
else{
$ending = @unlink ($filePath);
return $ending;
}
}

}
?>