//獲取域名或主機地址echo $_SERVER['HTTP_HOST']."<br />"; //獲取網頁地址echo $_SERVER['PHP_SELF']."<br />"; //獲取網址參數echo $_SERVER["QUERY_STRING"]."<br />"; //獲取用戶代理echo $_SERVER['HTTP_REFERER']."<br />"; //獲取完整的urlecho 'http://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];echo 'http://'.$_SERVER['HTTP_HOST'].$_SERVER['PHP_SELF'].'?'.$_SERVER['QUERY_STRING']; //包含端口號的完整urlecho 'http://'.$_SERVER['SERVER_NAME'].':'.$_SERVER["SERVER_PORT"].$_SERVER["REQUEST_URI"]; //只取路徑$url='http://'.$_SERVER['SERVER_NAME'].$_SERVER["REQUEST_URI"];echo dirname($url);