在PHP中截取當前頁面URL地址及URL信息的方法

//獲取當前的域名:

echo $_SERVER['SERVER_NAME'];

//獲取來源網址,即點擊來到本頁的上頁網址

echo $_SERVER["HTTP_REFERER"];

$_SERVER['REQUEST_URI'];//獲取當前域名的後綴

$_SERVER['HTTP_HOST'];//獲取當前域名

dirname(FILE);//獲取當前文件的物理路徑

dirname(FILE)."/../";//獲取當前文件的上一級物理路徑

?>

#測試網址:https://www.why114.com /blog/test.php?act=checkcode

//獲取域名或主機地址

echo $_SERVER['HTTP_HOST']."

"; # www.why114.com

//獲取網頁地址

echo $_SERVER['PHP_SELF']."

"; #/blog/test.php

//獲取網址參數

echo $_SERVER["QUERY_STRING"]."

"; #act=checkcode

//獲取用戶代理

echo $_SERVER['HTTP_REFERER']."

";

//獲取完整的url

echo 'http://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];

echo 'http://'.$_SERVER['HTTP_HOST'].$_SERVER['PHP_SELF'].'?'.$_SERVER['QUERY_STRING'];

#http://www.why114.com /blog/test.php?act=checkcode

//包含端口號的完整url

echo 'http://'.$_SERVER['SERVER_NAME'].':'.$_SERVER["SERVER_PORT"].$_SERVER["REQUEST_URI"];

#http://www.qilucms.com :80/blog/test.php?act=checkcode

//只取路徑

$url='http://'.$_SERVER['SERVER_NAME'].$_SERVER["REQUEST_URI"];

echo dirname($url);

#http://www.qilucms.com :80/blog