最新的php 文件上傳模型，支持多文件上傳

更新時(shí)間：2009年08月13日 14:33:23 作者：

為 MayFish 重新封裝的一個(gè)文件上傳類，支持多個(gè)文件同時(shí)上傳，設(shè)置允許的上傳文件類型和文件大小。

<?php 
class UploadModel 
{ 
protected $keys; 
protected $err = array(); 
protected $target; 
protected $exts; 
protected $maxSize; 
protected $randName; 
protected $files = array(); 
/** 
* 初始化變量 
*/ 
public function __construct() 
{ 
$this->exts = array('jpeg','jpg','gif','png','zip','rar'); 
$this->maxSize = 1024*1024*2; 
$this->target = dirname(__FILE__) . '/upload/'; 
$this->randName = true; 
$this->keys = $this->getKeys(); 
} 
/** 
* 獲取 file 的名稱 
*/ 
protected function getKeys() 
{ 
$keys = array_keys($_FILES); 
return $keys; 
} 
/** 
* 設(shè)置不同類型的變量 
*/ 
public function __set($name, $value) 
{ 
$property = array('target','exts','maxSize','randName'); 
if(!in_array($name, $property)) return false; 
switch(strval($name)) 
{ 
case 'target': 
$this->$name = Configure::read('app_path') . $value; 
break; 
case 'exts': 
$this->$name = explode(',', $value); 
break; 
case 'randName': 
if($value === true || $value == 1) 
{ 
$this->$name = true; 
} 
else { 
$this->$name = false; 
} 
break; 
default: 
$this->$name = $value; 
} 
} 
/** 
* 移動(dòng)上傳的文件到指定的目錄 
* @param $fileName 移動(dòng)單個(gè)文件名稱的時(shí)候，對(duì)上傳的文件重新命名 
*/ 
public function save($fileName) 
{ 
$this->err = array(); 
$this->files = array(); 
if(!file_exists($this->target)) { 
mkdir($this->target); 
chmod($this->target, 0777); 
} 
foreach($this->keys as $key) 
{ 
if(is_array($_FILES[$key]['name'])) 
{ 
$count = count($_FILES[$key]['name']); 
for($i=0; $i<$count; $i++) 
{ 
$keys = array_keys($_FILES[$key]); 
foreach($keys as $item) 
{ 
$file[$item] = $_FILES[$key][$item][$i]; 
} 
$this->upload($file, $fileName); 
} 
return (count($this->err) > 0)? false:true; 
} 
else { 
return $this->upload($_FILE[$key], $fileName); 
} 
} 
} 
/** 內(nèi)部處理上傳文件的過(guò)程 */ 
protected function upload($file, $fileName) 
{ 
if(!is_uploaded_file($file['tmp_name'])) return false; 
if(!$this->checkExt($file)) return false; 
if(!$this->checkSize($file)) return false; 
if($this->randName) 
{ 
$newFileName = $this->target . date('YmdHis', time()) . rand(0,9) . '.' . $this->getExt($file['name']); 
} 
elseif(emptyempty($fileName)) 
{ 
$newFileName = $this->target . '/' . $file['name']; 
} 
else { 
$newFileName = $this->target . '/' . $fileName; 
} 
$result = move_uploaded_file($file['tmp_name'], $newFileName); 
if(!$result) 
{ 
return false; 
} 
else { 
$this->files[] = str_replace($this->target, $newFileName); 
return true; 
} 
} 
/** 
* 是否是可上傳的文件類型 
* @param $file 文件對(duì)象 
*/ 
public function checkExt($file) 
{ 
if(!in_array($this->getExt($file['name']), $this->exts)) 
{ 
$this->err[] = $file['name'].':ext'; 
return false; 
} 
else { 
return true; 
} 
} 
/** 
* 獲取文件后綴名 
*/ 
public function getExt($fileName) 
{ 
$pos = strrpos($fileName, '.')+1; 
return substr($fileName, $pos); 
} 
/** 
* 檢查文件大小是否合法 
*/ 
public function checkSize($file) 
{ 
if($size > $this->maxSize) 
{ 
$this->err[] = $file['name'].':max'; 
return false; 
} 
else { 
return true; 
} 
} 
/** 
* 取得已經(jīng)上傳的文件名稱 
*/ 
public function getFiles() 
{ 
return $this->files; 
} 
} 

使用實(shí)例：

復(fù)制代碼代碼如下:

 
include 'uploaded.model.php'; 
$U = new UploadModel(); 
$U->target = '/tmp/'; 
$U->exts = 'jpg,gif'; 
$U->maxSize = 1024*275; //275KB 
$U->save(); 
$files = $U->getFiles(); 
print_r($files); 
include 'uploaded.model.php'; 
$U = new UploadModel(); 
$U->target = '/tmp/'; 
$U->exts = 'jpg,gif'; 
$U->maxSize = 1024*275; //275KB 
$U->save(); 
$files = $U->getFiles(); 
print_r($files); 

在 MayFish 里的使用實(shí)例：

復(fù)制代碼代碼如下:

 
public function up() 
{ 
$U = M('SYS', 'upload'); 
$U->target = '/tmp/'; 
$U->exts = 'jpg,gif'; 
$U->maxSize = 1024*275; //275KB 
$U->save(); 
header('Location:/?a=upload'); 
} 
public function up() 
{ 
    $U = M('SYS', 'upload'); 
    $U->target = '/tmp/'; 
    $U->exts = 'jpg,gif'; 
    $U->maxSize = 1024*275; //275KB 
    $U->save(); 
    header('Location:/?a=upload'); 
} 

前臺(tái)代碼：

復(fù)制代碼代碼如下:

 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 
<title>無(wú)標(biāo)題文檔</title> 
</head> 
<body> 
<form action="/?a=up" method="post" enctype="multipart/form-data"> 
<!-- 以下兩上file類型控制的name屬性可以任意設(shè)置，系統(tǒng)會(huì)自己取出input 的名稱 --> 
<input name="files[]" type="file" size="30" /> 
<input name="files[]" type="file" size="30" /> 
<input type="submit" value="開(kāi)始上傳" /> 
</form> 
</body> 
</html> 