How to Calculate Age with PHP
Calculate age in PHP
$your_birthday = '1982-08-29';
$difference = date_diff(date_create(), date_create($your_birthday));
$age = $difference->format('%Y');
Short and sweet
Validate Uniqueness on Join Tables in Rails
How to validate uniqueness in a :has_many :through relationship with Ruby on Rails. You'll need three models in this example List, Subscriber and ListSubscriber. A list has many subscribers and a subscriber has many lists. Simple enough. Running the follo...