Drupal 6: Create an admin settings page for your module

Here's a code snippet to show you how to create an admin settings page for your module. In this example, I'll create a form that allows the user to enable/disable checkboxes for each node type. This might be useful if you wanted to modify the functionality of a node and allow the user to choose which nodes.

<?php
function MYMODULE_menu() {
  $items = array();
  // ...code...
  $items['admin/settings/MYMODULE'] = array(
    'title' => t('MY TITLE'),
    'description' => t('MY DESCRIPTION'),
    'page callback' => 'drupal_get_form',
    'page arguments' => array('MYMODULE_admin_settings'),
    'access arguments' => array('administer site configuration'),
  );
  // ...code...
  return $items;
}

function MYMODULE_admin_settings() {
  $form = array();

  // get a list of node types
  $nodeTypes = node_get_types();

  // loop through node types and create an array of options
  $options = array();
  foreach ($nodeTypes as $k => $v) {
    $options[$k] = $v->name;
  }

  // add form input element
  $form['MYMODULE_enabled_node_types'] = array(
    '#type' => 'checkboxes',
    '#title' => t('Enabled node types'),
    '#options' => $options,
    '#default_value' => variable_get('MYMODULE_enabled_node_types', array()),
  );

  return system_settings_form($form);
}
?>

Screenshot:

module settings page