php現在のページアドレスバーのアドレスを取得

JAvascript実装:

top.location.href          
this.location.href         

 
     
PHP  ：
  
//          
echo $_SERVER['HTTP_HOST']."<br>"; #localhost

//       
echo $_SERVER['PHP_SELF']."<br>"; #/blog/testurl.php

//       
echo $_SERVER["QUERY_STRING"]."<br>"; #id=5

//       
echo $_SERVER['HTTP_REFERER']."<br>"; 

//     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

//        url
echo 'http://'.$_SERVER['SERVER_NAME'].':'.$_SERVER["SERVER_PORT"].$_SERVER["REQUEST_URI"]; 
#http://localhost:80/blog/testurl.php?id=5

//    
$url='http://'.$_SERVER['SERVER_NAME'].$_SERVER["REQUEST_URI"]; 
echo dirname($url);