How can the isset() function in PHP be utilized to handle form submissions with image buttons?

When handling form submissions with image buttons in PHP, the isset() function can be utilized to check if the form has been submitted using the image button. This is because image buttons do not send a value like regular submit buttons do. By checking if the image button's name attribute is set in the $_POST or $_GET superglobal arrays, we can determine if the form was submitted using the image button.

if(isset($_POST['image_button_name'])){
    // Form submitted using image button
    // Handle form data here
}