#drupal Entity export. Useful in hook_install() and hook_uninstall(). Drupal 7

Drupal Entity Field Export

<?php

/**
 * @file
 * Export serialized data containing fields attached to an Entity. Example used when Features not installed.
 */

function MODULE_NAME_install() {
  drupal_install_schema(SCHEMA_NAME);
  MODULE_NAME_add_entity_fields();
}

/**
  Implentation of hook_uninstall().
 */
function MODULE_NAME_uninstall() {
  drupal_uninstall_schema(SCHEMA_NAME);
  MODULE_NAME_delete_entity_fields();
}

function MODULE_NAME_entity_export() {
  $export_data = array();
  $export_data['entity_name'] = 'ENTITY';
  $export_data['bundle_name'] = 'BUNDLE';
  $instances = field_info_instances($export_data['entity_name'], $export_data['bundle_name']);

  foreach ($instances as $field_name => $field) {
    $export_data['data'][] = array(
      'field' => field_info_field($field_name),
      'instance' => field_info_instance($export_data['entity_name'], $field_name, $export_data['bundle_name']),
    );
  }
  return serialize($export_data);
}

function MODULE_NAME_return_entity_fields() {
  return unserialize(SERIALIZED_EXPORT);
}

function MODULENAME_add_entity_fields() {
  $fields = MODULE_NAME_return_entity_fields();
  if (!empty($fields)) {
    foreach ($fields['data'] as $item) {
      field_create_field($item['field']);
      field_create_instance($item['instance']);
    }
  }
}

function MODULE_NAME_delete_entity_fields() {
  $fields = MODULE_NAME_return_entity_fields();
  if (!empty($fields)) {
    foreach ($fields['data'] as $item) {
      field_delete_instance($item['instance'], TRUE);
      field_delete_field($item['field']['field_name']);
    }
  }
}