I am learning PHP from w3schools' PHP tutorial. I'm using PHP 7.0.13
While learning I come across the concept of Global Variables - Superglobals.
This is the page from where I'm learning Global Variables - Superglobals
Note : Please go to the above link to check the listing of server variables.
On this page I tried with all the server variables but I receive Notice as Undefined index for following few server variables :
$_SERVER['HTTP_ACCEPT_CHARSET']$_SERVER['HTTPS']$_SERVER['REMOTE_HOST']$_SERVER['SCRIPT_URI']
For each of the above variables I tried following code. For example :
<!DOCTYPE html>
<html>
<body>
<pre>
<?php
echo $_SERVER['PATH_TRANSLATED'];//like this I tried for other three server variables also
?>
</pre>
</body>
</html>
Apart from this I also observed few new server variables are there in the array $_SERVRER when I tried to execute the code print_r($_SERVER);
So, my question is are few of the old server variables present in PHP5 have been removed in PHP7 and few others have been newly added?
I also tried to check in PHP Documentation but there also I couldn't get any idea about this.
So, please someone please clarify my doubts.
Thanks.
Content of
$_SERVERis mainly created by web server, as documented here:so PHP got very little to do here.