Use PHP5.3+

With PHP5.3+ we can use "late static binding" (static::) which helps to customize and extend the available classes.

Also, ssn() is provided as BC method for all classes as CakePHP2.5 and below use this internally.
CakePHP2.6+ will then use personId().

French version only
The french phone number validation has been extended to phone numbers starting by 07,08 and 09.
La validation des numéros de téléphone français a été étendue aux numéros commençant par 07, 08 et 09.