PHP obtains the current host, domain name, path, port and other parameters code sharing

This article mainly introduces how PHP obtains the current host, domain name, URL, path, port and other parameters. It has certain reference value. If you are interested, you can learn more. I hope it can help everyone.

Experimental environment:

Test domain name daxiangtravel.com, apache root directory/mnt/, test directory/mnt/qa/test, test file name is index.php.

Get the code:

Get the current directory:

  getcwd();
// /mnt/qa/test
dirname(__FILE__);
// /mnt/qa/test

Get the domain name or host address

$_SERVER['HTTP_HOST'];
 //daxiangtravel.com

Get the web page address

$_SERVER['PHP_SELF'];
// /qa/test/index.php

Get the URL Parameters

$_SERVER["QUERY_STRING"];
// v=433
获取用户代理
 
$_SERVER['HTTP_REFERER'];
// http://daxiangtravel.com/qa/test/index.php?v=433

Get the complete url

'http://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];
// http://daxiangtravel.com/qa/test/index.php?v=433
 'http://'.$_SERVER['HTTP_HOST'].$_SERVER['PHP_SELF'].'?'.$_SERVER['QUERY_STRING'];
// http://daxiangtravel.com/qa/test/index.php?v=433

Get only the path

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

The complete url including the port number

'http://'.$_SERVER['SERVER_NAME'].':'.$_SERVER["SERVER_PORT"]
.$_SERVER["REQUEST_URI"];
// http://daxiangtravel.com:80/qa/test/index.php?v=433

Related recommendations:

How to get domain name IP address code function in php

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