為 MayFish 重新封裝的一個
PHP文件上傳類，支持多個文件同時上傳，設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;
}
}
/**
* 移動上傳的文件到指定的目錄
* @param $fileName 移動單個文件名稱的時候，對上傳的文件重新命名
*/
public function save($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], $fileName);
}
}
}
/** 內部處理上傳文件的過程 */
protected function upload($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[] = $file['name'].':ext';
return false;
}
else {
return true;
}
}
/**
* 獲取文件後綴名
*/
public function getExt($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;
}
}
/**
* 取得已經上傳的文件名稱
*/
public function getFiles()
{
return $this->files;
}
}
使用實例：
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 裡的使用實例：
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');
}
前台代碼：
<!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>無標題文檔</title>
</head>
<body>
<form action="/?a=up" method="post" enctype="multipart/form-data">
<!-- 以下兩上file類型控制的name屬性可以任意設置，系統會自己取出input 的名稱 -->
<input name="files[]" type="file" size="30" />
<input name="files[]" type="file" size="30" />
<input type="submit" value="開始上傳" />
</form>
</body>
</Html>
