Erik Jones <erik@myemma.com> writes:
> IIRC, if they're PERL compatible which it would seem from the php
> function you're using, no. Postgres supports POSIX regexes but not
> (right now anyway) PERL regexes.
Actually what we support are Tcl (Henry Spencer) regexes, which are
about as powerful as Perl's but have a few minor incompatibilities.
Tcl and Perl regexes are both supersets of the POSIX requirements.
regards, tom lane