测试URL：http://localhost/blog/testurl...//获取域名或主机地址echo$_SERVER['HTTP_HOST']."";#localhost//获取网址echo$_SERVER['PHP_SELF']."";#/blog/testurl.php//获取URL参数echo$_SERVER["QUERY_STRING"]."";#id=5//获取用户代理echo$_SERVER['HTTP_REFERER']."";//获取完整的urlecho'http://'.$\_SERVER\['HTTP\_HOST'\].$_SERVER['REQUEST_URI'];echo'http://'.$\_SERVER\['HTTP\_HOST'\].$_SERVER['PHP_SELF'].'?'.$_SERVER['QUERY_STRING'];http://localhost/blog/testurl...//包括端口号的完整urlCho'http://'.$\_SERVER\['SERVER\_NAME'\].':'.$_SERVER["SERVER_PORT"].$_SERVER["REQUEST_URI"];http://localhost:80/blog/testurl.php?id=5//只走路径$url='http://'.$_SERVER['SERVER_NAME'].$_SERVER["REQUEST_URI"];echo目录名($url);
