Form Example 1

form_example_1.php

<?php

function MYMODULE_example_form($form, &$form_state) {
  $form = array();
  
  $form['name'] = array(
    '#type' => 'textfield',
    '#title' => t("Your Name"),
  );
  
  $form['flavor'] = array(
    '#type' => 'select',
    '#title' => t("Favorite Flavor"),
    '#options' => array(
      0 => t("Vanilla"),
      1 => t("Chocolate"),
      2 => t("Aspertame"), 
    ),
  );
  
  $form['submit'] = array(
    '#type' => 'submit',
    '#value' => t("Submit"),
  );
  
  return $form;
}