Four ways to fully obtain URL address bar parameters in PHP

PHP tutorials Comprehensive access to URL address bar parameters in a variety of ways

<?php


//Get domain name or host address


echo $_server[' Http_host '. <br> ";


//Get web address


echo $_server[' php_self '. <br> ";


//Get URL parameters


echo $_server["Query_string"]. <br> ";


//source page details address


echo $_server[' Http_referer '. <br> ";


?>

Method two uses? Number expression,

echo ' http://'. $_server[' server_name '. $_server["Server_port"].$_server["Request_uri"];

Method three is the same

function getServerName ()


{


$ServerName = strtolower ($_server[' server_name ']?$_server[' server_name ']:$_server[' http_host '));


if (Strpos ($ServerName, ' http://')


{


return str_replace (' http://', ', $ServerName);


}


return $ServerName;


}


//Instance invocation method


echo getServerName ();

Method Four, this relatively comprehensive get URL parameters, first with Request_uri if the server does not support the php_self do not support

query_string


function Getcururl ()


{


if (!empty ($_server["Request_uri"))


{


$scrtName = $_server["Request_uri"];


$nowurl = $scrtName;


}


Else


{


$scrtName = $_server["Php_self"];


if (Empty ($_server["query_string"))


{


$nowurl = $scrtName;


}


Else


{


$nowurl = $scrtName. $_server["Query_string"];


}


}


return $nowurl;


}

These examples, in fact, are used in the PHP $_sever global variables to achieve.