PHP Get Path

PHP Gets the current page URL path

#测试网址:     http://localhost/blog/testurl.php?id=5//Get domain name or host address echo $_server[' http_host ']. ""; #localhost//Get web address echo $_server[' php_self ']. ""; #/blog/testurl.php//Get URL parameters echo $_server["Query_string"]. ""; #id = 5//Get user agent echo $_server[' Http_referer ']. "";  Get the full Urlecho ' 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//Complete Urlecho '/HTTP ' with port number. $_server[' Server_ NAME ']. ': '. $_server["Server_port"].$_server["Request_uri"]; #http://localhost:80/blog/testurl.php?id=5//Fetch path $url= '/http '. $_server[' server_name '].$_server["Request_uri"] ; echo dirname ($url); #http://localhost/blog

PHP gets the absolute path to the current file

<?php   echo __file__;//Get the absolute address of the current file, result: D:\www\test.php   echo dirname (__file__);//Get the absolute directory where the current file is located, Result: D:\www \   

Using the method tips,
DirName (__file__) takes the absolute path to the current file, which means that the lookup speed is the fastest compared to the relative path.
If you repeat, you can raise the directory up one level:
For example: $d = DirName (dirname (__file__));
The fact is that a directory to dirname () to do the parameters. Because DirName () returns the final directory without \ \ or
So when you reuse it, you can think of dirname () handling the lowest-level directory as a file name. Return as usual
The parent directory of the current directory. That way, you get the top level of the directory.

Files that contain the previous level of the directory
Include (DirName (__file__). ' /.. /filename.php ');
__file__ path is the file where the current code resides
DirName (DirName (__file__)); Get the file on the top of the directory name
DirName (__file__); Gets the directory name of the file.

PHP Get Path