hyperlink - How to use $_GET variable (index.php?cat=about)

Hey there,

I've had a similar situation in the past, and I can definitely provide some input! When it comes to using the `$_GET` variable in PHP, it's essential to understand how it works.

In your case, where the URL is `index.php?cat=about`, the `$_GET` variable allows you to retrieve the value specified after the equals sign in the URL parameter. So, in this example, you can use `$_GET['cat']` to access the value "about".

To make the code more robust, I suggest performing some checks before accessing the `$_GET` variable to avoid potential errors. You can use the `isset()` function to determine if the parameter is set in the URL before retrieving its value. Here's an example:

php
if(isset($_GET['cat'])) {

    $cat = $_GET['cat'];

    // Proceed with further processing or displaying the value

} else {

    // Handle the case when the parameter is not present

}

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Hello,

I had a similar issue before, and I can definitely help you out! The `$_GET` variable in PHP is used to retrieve data that is sent through the URL. In your case, when you have a URL like `index.php?cat=about`, it means that the value "about" is being passed to the `cat` parameter.

To retrieve this value in your PHP code, you can simply access the `$_GET` array. In your case, you would use `$_GET['cat']` to retrieve the value "about". For example, let's say you want to store this value in a variable:

php
$cat = $_GET['cat'];

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