Question about $_GET["id"]

Hello,

There are two three types of arrays you need to worry about and that is: $_SESSION, $_POST, and $_GET. $_SESSION works only if you start a session via session_start();. What ever you put into the session array stays alive throughout all of the scripts until the session sends or if you destroy the piece of information you added. $_POST and $_GET are the same as it will transfer information between two pages. $_POST information gets passed in the background while $_GET gets passed via the URL.

If you have a URL www.domain.com?var1=a&var2=b&var3=c, you will have them available on that page via the $_GET['var1'], $_GET['var2'], and $_GET['var3']. In short, any information that gets passed through the URL can be accessed via the $_GET. You can also pass information from forms by making the form method equal to get: <form method="get">. I hope this helps you and if you need more help don't hesitate to ask.

Cheers!

Hello, if I get It right. The "id" you get on $_GET["id"] will be used to search on the database.

Like:

$product_id = $_GET["id"];
$query = "SELECT * FROM products WHERE id = $product_id"; // ps: just for example purposes, this is not safe, you must clean the input before using it in the query

Hello,

If I remember the lesson (since I did this a long time ago), when you choose a shirt from the listing page shirts.php, you will be sent to the shirt.php page using the id, for the shirt, in the URL: shirt.php?id=101. Then the shirt.php page will grab the id using the method you described.

Cheers!

Thank you! understood!

O, but I thought $_GET only looks for the info from the array? I think Im a little confused about the $_GET function .