PHP 현재 URL 출력

#테스트주소:    http://localhost/blog/testurl.php?id=5

//도메인 혹은 서버주소 

echo $_SERVER['HTTP_HOST']."

"; #localhost



//현재주소 

echo $_SERVER['PHP_SELF']."

"; #/blog/testurl.php



//도메인 값

echo $_SERVER["QUERY_STRING"]."

"; #id=5



//대리

echo $_SERVER['HTTP_REFERER']."

"; 



//전체url

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



//포트폼함된 전체url

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

#http://localhost:80/blog/testurl.php?id=5



//경로만

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

echo dirname($url);

#http://localhost/blog