How can PHP be used to prevent unauthorized access to website links through viewing page source?

To prevent unauthorized access to website links through viewing page source, you can use PHP to check if the user is authorized before displaying the link. This can be done by setting up a session variable when the user logs in and checking for that variable before allowing access to the link. 

<?php
session_start();

if(isset($_SESSION['authorized']) && $_SESSION['authorized'] === true){
    echo '<a href="secret-page.php">Secret Page</a>';
} else {
    echo 'You are not authorized to access this page.';
}
?>

Keywords

PHP session management authentication access control obfuscation

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