What is the correct way to retrieve parameters passed through the URL in PHP?

To retrieve parameters passed through the URL in PHP, you can use the $_GET superglobal array. This array contains key-value pairs of parameters passed in the URL query string. You can access the values by using the key corresponding to the parameter name.

// Retrieve parameter 'id' from the URL
$id = $_GET['id'];

// Check if the parameter exists before using it
if(isset($_GET['id'])) {
    $id = $_GET['id'];
    // Do something with the parameter
} else {
    // Handle the case where the parameter is not provided
}