Re: Ereg bug?

Lee Willis writes: > I'm having problems with some eregs/pregs in PHP 4.0.1p2 and I wanted to > post them here to check I wasn't being dumb before reporting this as a > bug. [trim] > Another more complicated example (Which is closer to what I was trying > to do ...) is: > > > <? > > if (ereg ('^[^\]\{(.*)[^\]\}', '{abc}', $matches)) { > while (list ($key, $value) = each ($matches)) { > echo "$key = $value<BR>"; > } > } else { > echo "REGEX didn't match."; > } > > ?> > > Which I think should match a {} enclosed string as long as there is no \ > before both the { and } > > It doesn't. These *seem* to be bugs in PHP/regex library but I'd be > grateful if anyone can check them over and check it's not just me being > dumb, and maybe even explain where I'm going wrong ... > > Thanks > Lee This doesn't look like a bug to me: the regex isn't matching because it's looking for a non-slash character before the { and }; there is no provision for there *not* to be a slash there. Throwing in a 'zero-or-more' (or 'zero-or-one') modifier fixes it; below I use a '?': <?php error_reporting(E_ALL); $tests = array ('{abc}', '\{abc}', '\{abc\}'); while (list(, $test) = each($tests)) { echo "Testing '$test': "; if (ereg ('^[^\]?\{(.*)[^\]?\}', $test, $matches)) { echo "Got '$matches[1]'.\n"; } else { echo "REGEX didn't match.\n"; } } ?> The output from the above is: Testing '{abc}': Got 'abc'. Testing '\{abc}': REGEX didn't match. Testing '\{abc\}': REGEX didn't match. Hope this helps, Torben -- +----------------------------------------------------------------+ |Torben Wilson <torben@php.net> Netmill iTech| |http://www.coastnet.com/~torben http://www.netmill.fi| |Ph: 1 250 383-9735 torben@netmill.fi| +----------------------------------------------------------------+