tech-pkg: Faulty php-4.1.1?

Subject: Faulty php-4.1.1?
To: None <tech-pkg@netbsd.org>
From: Paolo Torelli <paolo.torelli@students.univr.it>
List: tech-pkg
Date: 02/27/2002 08:43:26

I seem to have this problem
PHP Fatal error: Call to undefined function: preg_match() in 
/root/php_test/preg.php on line 3
which is just a copy&paste of the example from the manual
AFAIK, preg_match() is a built-in, why do I get this error?
Thank you.