AvengeX Webmaster Development - Free PHP, MySQL, CSS, XHTML, Photoshop Tutorials

$_GET is the function that takes out variables from a URL. For example, let's take this URL here and break it down:
www.avengex.com/?go=tutorials&to=viewcat&catid=6
You'll notice there are equals signs between two pieces of text. The part on the left hand side of the equation is the variable name. So, if you parsed ths URL with a php script looking like this:
<?php
echo $_GET[go];
?>It would come out with "tutorials". In the URL above, you have the following variables inside $_GET[]. These are:
$go
$to
$catid

This is very good for actions pages without forms. It's similar to $_POST, but instead of the data being sent through a form it is sent through the URL. The $_GET method is vital for uses of most CMS operations. For viewing threads you'd assign an ID to the end of the URL, and then you'd take the ID out of the URL with $_GET, and then go to the database and select the thread with that ID.

Remember, similar to $_POST, $_GET is a gate which can be opened for hackers and script kiddies to SQL inject your database, so I suggest you look at a2z's tutorial on cleaning out user inputs before you do anything with the database.

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