Accessing Values as an Array in PHP $_GET

In PHP, the $_GET superglobal variable provides a way to access data sent from a web form or a URL query string. However, it's not immediately clear how to obtain values in the $_GET array as an array.

Let's consider a scenario where you want to send multiple values for the "id" parameter in a URL:

http://link/foo.php?id=1&id=2&id=3

If you attempt to access the "id" value using $_GET['id'], you'll only get the last value (in this case, "3"). To retrieve the values as an array, you can modify your URL to include square brackets ("[]") after the parameter name:

http://link/foo.php?id[]=1&id[]=2&id[]=3

Now, if you access $_GET['id'], you'll obtain an array containing all the "id" values:

print_r($_GET['id']); // Output: [1, 2, 3]

This approach allows you to easily access multiple values for a single parameter in your PHP code.