javascript實現：
top.location.href 頂級窗口的地址
this.location.href 當前窗口的地址
PHP實現：
top.location.href 頂級窗口的地址
this.location.href 當前窗口的地址
PHP實現：
#測試網址: http://localhost/blog/testurl.php?id=5 //獲取域名或主機地址 echo $_SERVER['HTTP_HOST']."<br>"; #localhost //獲取網頁地址 echo $_SERVER['PHP_SELF']."<br>"; #/blog/testurl.php //獲取網址參數 echo $_SERVER["QUERY_STRING"]."<br>"; #id=5 //獲取用戶代理 echo $_SERVER['HTTP_REFERER']."<br>"; //獲取完整的url echo 'http://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI']; echo 'http://'.$_SERVER['HTTP_HOST'].$_SERVER['PHP_SELF'].'?'.$_SERVER['QUERY_STRING']; #http://localhost/blog/testurl.php?id=5 //包含端口號的完整url echo 'http://'.$_SERVER['SERVER_NAME'].':'.$_SERVER["SERVER_PORT"].$_SERVER["REQUEST_URI"]; #http://localhost:80/blog/testurl.php?id=5 //只取路徑 $url='http://'.$_SERVER['SERVER_NAME'].$_SERVER["REQUEST_URI"]; echo dirname($url); #http://localhost/blog
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