Create customer attribute in Magento 1

createCustomerAttribute.php

<?php
(PHP_SAPI !== 'cli' || isset($_SERVER['HTTP_USER_AGENT'])) && die('cli only');
$baseDir = dirname(dirname(__FILE__));

print $baseDir;

require_once($baseDir.'/app/Mage.php');


umask(0);
Mage::app()->setCurrentStore(Mage_Core_Model_App::ADMIN_STORE_ID);


$installer = new Mage_Customer_Model_Resource_Setup('core_setup');
$installer->startSetup();

$setup = new Mage_Eav_Model_Entity_Setup('core_setup');

$entityTypeId     = $setup->getEntityTypeId('customer');
$attributeSetId   = $setup->getDefaultAttributeSetId($entityTypeId);
$attributeGroupId = $setup->getDefaultAttributeGroupId($entityTypeId, $attributeSetId);


$installer->addAttribute('customer', 'mob_app_token', array(
    'label' => 'Mobile App Token',
    'visible'  => true,
    'input' => 'text',
    'type'  => 'varchar',
    'source'  => 'eav/entity_attribute_source_table',
    'forms' => array('adminhtml_customer'),
    'required' => 0,
    'user_defined' => 0,
));

$attribute  = Mage::getSingleton("eav/config")->getAttribute("customer", "mob_app_token");

$setup->addAttributeToGroup(
    $entityTypeId,
    $attributeSetId,
    $attributeGroupId,
    'mob_app_token',
    '99991'  //sort_order
);

$used_in_forms=array();

$used_in_forms[]="adminhtml_customer";

$attribute->setData("used_in_forms", $used_in_forms)
    ->setData("is_used_for_customer_segment", true)
    ->setData("is_system", 0)
    ->setData("is_user_defined", 1)
    ->setData("is_visible", 1)
    ->setData("sort_order", 100)
;
$attribute->save();
$installer->endSetup();