Get a nice looking form for birthdays. Enter the year manually and then drop down for month and day.
// app/config/config.yml
twig:
form:
resources:
- 'HappyrBirthdayBundle:Form:fields.html.twig'
//WhateverFormType.php
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder->add('birthday', 'happyr_birthday')
}