Lion Server: Migrating custom php.ini settings from Mac OS X Server v10.6
When you upgrade or migrate to Lion Server v10.7 or 10.7.1 from Mac OS X Server v10.6, your custom php.ini settings may not be automatically migrated to the updated version of PHP in Lion Server.
If you upgrade or migrate to Lion Server v10.7.2 or later, this issue should not occur.
If this occurred after an upgrade or migration to Lion Server v10.7 or 10.7.1, your old settings will be in the file /etc/php.ini-5.2-previous. You can manually copy your settings to the active /etc/php.ini file.