What is the purpose of using PHP in creating a button that must be clicked to access content on the next page?

When creating a button that must be clicked to access content on the next page, PHP can be used to handle the logic of redirecting the user to the next page only when the button is clicked. This can be achieved by checking if the button has been clicked using PHP and then redirecting the user to the next page if the condition is met. 

<?php
if(isset($_POST['submit_button'])) {
    header("Location: next_page.php");
    exit;
}
?>

<form method="post">
    <button type="submit" name="submit_button">Click to Access Content</button>
</form>

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