又花了半天时间写了个php上传类

//up_class.php



<?php

class UpFile{

	private $inputFile;	//文件域名

	private $tmpName;	//临时文件名

	private $tmpPath;	//临时文件路径

	private $savePath;	//保存路径

	private $reType;	//返回类型

	private $upMaxSize;	//上传文件大小限制

	private $allowFile; //允许上传的文件

	private $upFolder; //要上传到的文件夹

	private $isReName;	//是否要将上传的文件重命名

	private $endFileName; //最终保存的文件名

	public  $fileSize;	//文件大小

	public  $fileType;	//文件类型

	public  $errorInt;	//上传失败及错误原因

	

	

	/**

	 * @param 

	 * $inputFile(表单内文件域名称);</br>

	 * $upFolder(保存到服务器的文件夹);</br>

	 * $isRename(对上传文件重命名，值 有 y|n );</br>

	 * $reType(上传成功后返回的值：n是返回文件名,pn:返回路径和文件名,j:返回js[待扩展]);</br>

	 * $upExt(要上传的文件分类,因为在不同的表单要限制不同的上传文件类型，比如 A表单只能上传图片，B表单只能上伟压缩包);</br>

	 * $maxSize(限制上传的文件大小)</br>

	 * @author:256kb

	 * @2012-5-1

	 */

	public function __construct($inputFile , $upExt = 0 , $reType = 'pn' , $upFolder = 'upload/' , $isRename = 'y' , $maxSize = 10485760){

		$this->inputFile = $inputFile;

		$this->reType = $reType;

		$this->upMaxSize = $maxSize;

		$this->allowFile = $upExt;

		$this->upFolder = $upFolder;

		$this->isReName = $isRename;

		//$this->errorInt = -1;

	}

	

	public function upFile(){

		$_file_arr = $_FILES[$this->inputFile];

		$this->errorInt = $_file_arr['error'];

		if(is_uploaded_file($_file_arr['tmp_name'])){

			if($_file_arr['tmp_name']){

				$this->tmpName = $_file_arr['name'];

				$this->upMaxSize = $_file_arr['size'];

				$this->fileType = $_file_arr['type'];

				$this->tmpPath = $_file_arr['tmp_name'];

				$this->fileSize = $_file_arr['size'];

				if($this->upMaxSize > $this->upMaxSize){

					$this->errorInt = 6	;	//大小超出网站限制

				}

				

				if(!$this->isAllow()){

					$this->errorInt = 8	;	//系统不允许此类型文件

				}

				

				if($this->isReName=='y'){

					$this->savePath = $this->upFolder.$this->getFolder().'/'.$this->getNewName() ;

					$this->endFileName = $this->getNewName();

				}else{

					$this->savePath = $this->upFolder.$this->getFolder().'/'.$this->tmpName ;

					$this->endFileName = $this->tmpName;

				}

				//echo $this->errorInt;

				if(!$this->errorInt >= 1){

					move_uploaded_file($this->tmpPath,$this->savePath);

				}

				

			}

		}

	}

	

	public function getFileUrl(){

		switch($this->reType){

			case 'n':

				return $this->endFileName;

			break;

			case 'pn':

				return $this->savePath;

			break;

			case 'js':

				return "<script language=\"javascript\" type=\"text/javascript\">window.parent.LoadAttach('".$this->savePath."');</script>";

			break;

			default:

				return $this->savePath;

		}

	}

	

	//获得新文件名

	public function getNewName(){

		return substr($this->tmpName,1,strrpos($this->tmpName,".")-1).'_'.mktime().'.'.$this->getFileExt();

	}

	

	public function upStatus(){

		//echo $this->errorInt;

		switch ($this->errorInt){

			case 1:

				return '超过了文件大小php.ini中限制大小';

			break;

			case 2:

				return '超过了文件大小MAX_FILE_SIZE 选项指定的值';

			break;

			case 3:

				return '文件只有部分被上传';

			break;

			case 4:

				return '没有文件被上传';

			break;

			case 5:

				return '上传文件大小为0';

			break;

			case 6:

				return '大小超出网站限制';

			break;

			case 7:

				return '网站内没有指定这种上传类型';

			break;

			case 8:

				return '系统不允许此类型文件';

			case 9:

				return '创建目录失败！';

			break;

		}

	}

	

	private function isAllow(){

		$allow = array(

				0 => array('image/jpg','image/jpeg','image/png','image/pjpeg','image/gif','image/bmp','image/x-png','application/x-zip-compressed','application/octet-stream'),

				1 => array('image/jpg','image/jpeg','image/png','image/pjpeg','image/gif','image/bmp','image/x-png'),

				2 => array('application/x-zip-compressed','application/octet-stream'),

				3 => array('','',''),

				4 => array('','','')

				);

		if($this->allowFile > count($allow)-1){

			$this->errorInt = 7;	//网站内没有指定这种上传类型

		}else{

			if(in_array($this->fileType, $allow[$this->allowFile])){

				return true;

			}else{

				return false;

			}

		}

	}

	

	public function getFileExt(){	//获得文件扩展名

		return strtolower(substr($this->tmpName,strrpos($this->tmpName,".")+1));

	}

	

	private function getFolder(){	//获得并自动创建相应文件夹

		if(strpos('|rar|zip|7z|iso|','|'.$this->getFileExt().'|')>=0){

			$_folder = 'rar';

		}elseif(strpos('|gif|jpeg|jpg|png|bmp|pjpeg|psd|','|'.$this->getFileExt().'|')>=0){

			$_folder = 'img';

		}elseif(strpos('|rm|rmvb|avi|mp4|swf|flv|wmv|','|'.$this->getFileExt().'|')>=0){

			$_folder = 'vide';

		}elseif(strpos('|doc|txt|xls|mdb||','|'.$this->getFileExt().'|')>=0){

			$_folder = 'doc';

		}else{

			$_folder = 'other';

		}

		if(!file_exists($this->upFolder.$_folder)){

			if(!mkdir($this->upFolder.$_folder)){

				$this->errorInt = 9;	//创建目录失败

			}

		}

		return $_folder;

	}

	

}

<?php

header("Content-type: text/html; charset=utf-8");

include './class/up_class.php';



if(isset($_POST['bottom'])){

	$up = new UpFile('ufile',0,'js');

	$up->upFile();

	echo $up->fileType."<br />";	//文件类型

	echo $up->fileSize."<br />";	//文件大小

	echo $up->upStatus()."<br />";	//如果没上传成功，显示文件上传失败原因

	echo $up->getFileExt()."<br />";//文件扩展名

	echo $up->getFileUrl()."<br />";//文件在服务器的路径

	echo $up->getNewName()."<br />";//上传后文件新名称

	

}

?>

<html>

<head>

	<title>test upload</title>

</head>



<body>

<form action="" method="post" enctype="multipart/form-data" name="form1" id="form1">

	<input type="file" id="ufile" name="ufile" />

	<input type="submit" name="bottom" id="bottom" value="upstart" />

</form>

	

</body>



</html>