This is a community's server from free.fr DSL service provider....
here the php.ini :
http://jeanmarcmassou.free.fr/dokuwiki/doku.php?id=php_info
I try to get the value of pcre.backtrack_limit and pcre.recursion_limit, with ini_get function.
but this version of php 5.1 doesn't support this directive (introduce by the 5.2 version of PHP).
So i think they are unlimited....
Here the default since 5.2 version :
Nom Défaut Modifiable Changelog
pcre.backtrack_limit 100000 PHP_INI_ALL Disponible depuis PHP 5.2.0.
pcre.recursion_limit 100000 PHP_INI_ALL Disponible depuis PHP 5.2.0.