Pagination Tutorials - stuck on something

[viezure]

Problem is solved, but i have a quick question for me to understand something. When i just open the page "listeazaclienti.php", where does the script search at first for the 'pagenum'?

 

if (!(isset($_GET['pagenum'])))
{ 
$pagenum = 1; 
} else {
$pagenum = $_GET['pagenum']; // abstract var from link
}

 

Let me see if i get it right. $_GET['pagenum'] doesn't have what to get at start, 'pagenum' doesn't event exist, so it creates the $pagenum var with the value of 1, and from there the script starts. Right?

 

And $_GET is a global variable related to forms. If i don't have any forms, how does it work?

[micmania1]

$_GET relates to the URL.

 

domain.com/page.php?pagenum=1

 

Whether you get to hat page wih a url or via a form, doesn't matter.