在这里插入代码片//获`echo $_SERVER[‘HTTP_HOST’].""; #localhost
//获取网页地址 echo $_SERVER[‘PHP_SELF’].""; #/blog/testurl.php
//获取网址参数 echo $_SERVER[“QUERY_STRING”].""; #id=5
//获取用户代理 echo $_SERVER[‘HTTP_REFERER’]."";
//获取完整的url echo ‘http://’. S E R V E R [ ′ H T T P H O S T ′ ] . _SERVER['HTTP_HOST']. SERVER[′HTTPHOST′]._SERVER[‘REQUEST_URI’]; echo ‘http://’. S E R V E R [ ′ H T T P H O S T ′ ] . _SERVER['HTTP_HOST']. SERVER[′HTTPHOST′]._SERVER[‘PHP_SELF’].’?’.$_SERVER[‘QUERY_STRING’]; #http://localhost/blog/testurl.php?id=5
//包含端口号的完整url echo ‘http://’. S E R V E R [ ′ S E R V E R N A M E ′ ] . ′ : ′ . _SERVER['SERVER_NAME'].':'. SERVER[′SERVERNAME′].′:′._SERVER[“SERVER_PORT”].$_SERVER[“REQUEST_URI”]; #http://localhost:80/blog/testurl.php?id=5
//只取路径 u r l = ′ h t t p : / / ′ . url='http://'. url=′http://′._SERVER[‘SERVER_NAME’]. S E R V E R [ " R E Q U E S T U R I " ] ; e c h o d i r n a m e ( _SERVER["REQUEST_URI"]; echo dirname( SERVER["REQUESTURI"];echodirname(url); #http://localhost/blog`取域名或主机地址
