$GET question, easy one

if I simply put www.something.com/?john

Without any id=john what's my $_GET['????']

 

You can use isset to do this.

<?php
if(isset($_GET['john'])){
echo "hello John!";
}
?>

PHP:

 

print_r($_GET);

PHP:

..and you'll see

Undefined variables in PHP can be NULL, false, 0, '', or Array().
== false returns always true on any of them, so this is an easy way to check for any undefined or empty variables.

Use isset() if you just want to check whether a variable has been initialized.

 

Just in case you want to read "john" from that URL (without any id), you can use this

<?php
$name = $_SERVER['QUERY_STRING'];
?>

PHP:

 

One learns a new thing everyday. Thank you!

 

I believe this is what I was looking for, thank you. rep added.

 

<?php
if(isset($_GET['john')) {
echo "Welcome john :D";
}
else {
echo "Hey you're not john!";
}
?>

PHP: