mysql - 数据插入成功。插入后，它为每个变量（即 mynumber、mytextfield、my text）提供未定义的常量。有什么建议么？

Question

/*hook_submit*/ function form_example_form_submit($form, &$form_state){

$fe_id = db_insert('form_example')
->fields(array(

/* 下面是变量*/

mynumber=> $form_state['values']['mynumber'],
mytextfield=> $form_state['values']['mytextfield'],
mytext=> $form_state['values']['mytext'],
))

->execute();
drupal_set_message(t('Your form has been added'));
}