What is the difference between using type="image" and type="submit" for form submission in PHP?

When using a form in PHP, the main difference between using type="image" and type="submit" for form submission is that type="image" allows for the use of an image as the submit button, while type="submit" uses a standard button for submission. Both types can be used to submit a form, but type="image" includes additional parameters like the x and y coordinates of the click location. If you do not need these additional parameters, it is recommended to use type="submit" for simplicity.

<form method="post" action="submit.php">
  <input type="text" name="username" placeholder="Enter your username">
  <input type="password" name="password" placeholder="Enter your password">
  <button type="submit">Submit</button>
</form>