What are some common strategies for controlling the visibility and functionality of buttons in PHP forms based on database values or user actions?

One common strategy for controlling the visibility and functionality of buttons in PHP forms based on database values or user actions is to use conditional statements to determine when to display or enable/disable the button. This can be achieved by checking the database values or user actions and setting the button's visibility or functionality accordingly.

<?php
// Check database value or user action
$showButton = true;

// Display button based on condition
if($showButton) {
    echo '<button type="submit">Submit</button>';
}
?>