How does the choice between using GET or POST methods in a form impact the handling of data in PHP scripts?

When using the GET method in a form, the data is appended to the URL and can be seen by users, making it less secure for sensitive information. On the other hand, the POST method sends data in the HTTP request body, making it more secure for sensitive information. To handle data securely in PHP scripts, it is recommended to use the POST method for forms that contain sensitive information.

<form method="post" action="process_form.php">
  <input type="text" name="username">
  <input type="password" name="password">
  <input type="submit" value="Submit">
</form>