PHP文件上载页简单实现

	function get_extension($file){						return substr(strrchr($file, '.'), 1);   			}  	function get_name($path){						return substr(strrchr($path, '/'), 1);   			} 	    function getImage($url,$fileName="") {				$fbufsize = 8096;				$ext = get_extension($url);								$fileName = get_name($url);								$type = array(				'gif' => 'image/gif',				'jpeg' => 'image/jpeg',				'jpg' => 'image/jpeg',				'jpe' => 'image/jpeg',				'png' => 'image/png', 				);								$imgType = isset($type[$ext])?$type[$ext]:die("类型不符");								header('Content-Description: File Transfer');				header('Expires: 0');				header('Cache-Control: must-revalidate, post-check=0, pre-check=0');				header('Pragma: public');				header("Content-type: ".$imgType);				header("Content-Transfer-Encoding: binary");				header('Content-Disposition: attachment; filename="'.$fileName.'"');							header("Content-Length:" . getimagesize($url)."\n\n" );   								$fp = fopen($url,"r");				while(!feof($fp)) {					print(fread($fp,$fbufsize));					flush();					ob_flush();				}				fclose($fp);				exit;		}		 	   getImage("http://www.lpfrx.com/wp-content/themes/ProSense/images/rss-feed-icon.jpg");