'Option 1', '2' => 'Option 2', '3' => 'Option 3'); echo begin_form('form_action.php'); echo form_dropdown('options', $options); echo form_submit('submit', 'Submit'); echo end_form(); ?>This example creates an HTML form using the begin_form function, with a drop-down select field containing three options. The PHP Form begin_form function belongs to the CodeIgniter framework which is a powerful PHP framework with a rich set of libraries and helpers. This function is specifically included in the Form Validation Library of CodeIgniter.