What are some common pitfalls when switching from the GET method to the POST method in PHP?

One common pitfall when switching from the GET method to the POST method in PHP is forgetting to update the form's method attribute to "post". This can lead to unexpected behavior or errors when submitting the form. To solve this issue, make sure to update the method attribute in the form tag to "post".

<form method="post" action="process_form.php">
  <!-- form fields here -->
  <input type="submit" value="Submit">
</form>