suppressing php warnings?

I'm migrating to a new server and am installing phpwiki-code-8855-trunk.
I'm getting a lot of warnings about preg_replace.

Warning: "preg_replace(): The /e modifier is deprecated, use
preg_replace_callback instead"

In /etc/php.ini, I have this line:
error_reporting = E_ALL & ~E_DEPRECATED & ~E_STRICT

which seems it should suppress warnings about deprecated features. But,
the warnings keep showing up.

Any ideas on an easy fix for this?

THANKS!

Harold



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