PEAR, the PHP Extension and Application Repository (originally, PHP Extension and Add-on Repository) is PHP's version of foundation classes, and may grow in the future to be one of the key ways to distribute both PHP and C-based PHP extensions among developers.
PEAR, signifie 'PHP Extension and Application Repository' (initialement, PHP Extension and Add-on Repository) est la première version de classe de base en PHP, et deviendra à terme le moyen privilégié de distribuer PHP et les modules C.