class upload { public $_file;
public function __construct( $name =null) { if(is_null($name) || !isset($_FILES[$name])) $name = key($_FILES); if(!isset($_FILES[$name])) throw new Exception("并没有文件上传"); $this->_file = $_FILES[$name]; if(!is_uploaded_file($this->_file['tmp_name'])) throw new Exception("异常情况"); if($this->_file['error'] !== 0) throw new Exception("错误代码:".$this->_file['error']); } public function moveTo( $new_dir) { $real_dir = $this->checkDir($new_dir); return move_uploaded_file($this->_file['tmp_name'], $real_dir.'/'.$this->_file['name']); } private function checkDir($dir) { $real_dir = realpath($dir); if($real_dir === false) throw new Exception("给定目录{$dir}不存在"); if(!is_writable($real_dir)) throw new Exception("给定目录{$dir}不可写"); return $real_dir; }
}
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