How can PHP handle the display of age-restricted content, such as adult advertisements, in compliance with regulations like the Youth Protection Act?

To handle the display of age-restricted content in compliance with regulations like the Youth Protection Act, PHP can be used to verify the user's age before showing the content. This can be achieved by prompting the user to input their birthdate and then comparing it to the current date to determine if they meet the age requirement.

<?php

// Get user's birthdate from form submission
$birthdate = $_POST['birthdate'];

// Calculate age based on birthdate
$age = date_diff(date_create($birthdate), date_create('today'))->y;

// Check if user meets age requirement
if ($age >= 18) {
    // Display adult content
    echo "Welcome to the adult section!";
} else {
    // Display message for underage users
    echo "Sorry, you must be 18 or older to access this content.";
}

?>