How can PHP developers differentiate between multiple links on a page to include different PHP files?

PHP developers can differentiate between multiple links on a page by passing a parameter in the URL to indicate which PHP file to include. This parameter can be retrieved using the $_GET superglobal array in PHP. By checking the parameter value, developers can include the appropriate PHP file based on the link clicked by the user. 

<?php
// Check the parameter value in the URL
if(isset($_GET['page'])) {
    $page = $_GET['page'];
    
    // Include the corresponding PHP file based on the parameter value
    switch($page) {
        case 'home':
            include 'home.php';
            break;
        case 'about':
            include 'about.php';
            break;
        case 'contact':
            include 'contact.php';
            break;
        default:
            include 'error.php';
    }
} else {
    include 'home.php'; // Default page to include
}
?>

Keywords

PHP links differentiate include files

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