php://—各入出力ストリームへのアクセス(I/O streams)

php://       /   

php://input            post   enctype  "multipart/form-data"    
                    post  (a=1&b=2&c=3) 
            
            $GLOBALS["HTTP_RAW_POST_DATA"]
            $postdata = file_get_contents("php://input");
            
            
php://output          
$fp = fopen('php://output', 'a'); //           
fwrite($fp, "hello wrold!");
fclose($fp);
            

 
todo
参照先:http://www.php.net/manual/zh/wrappers.php.php#refsect2-wrappers.php-unknown-unknown-unknown-descriptioq