What are the potential pitfalls of using image buttons in PHP forms for different functions?

Using image buttons in PHP forms can lead to potential pitfalls such as inconsistent styling across different browsers, difficulty in maintaining responsiveness, and issues with accessibility for users with disabilities. To solve this, consider using CSS for styling and ensuring the form elements are accessible and responsive.

<form action="submit.php" method="post">
    <input type="image" src="submit_button.png" alt="Submit Form" name="submit">
</form>