Re: regex backreference help needed (PCRE)

Thanks Andrei, I have got this far now. Please could you follow the other thread, I'm having other problems now! thanks, - Kev Andrei Zmievski wrote: > > I'm trying to use backreferences in the PCRE stuff, but this code: > > > > <? > > $text = "Turn <B>bold</B> to a link"; > > > > $newtext = preg_replace( "/<B>(.*)?<\/B>/e", > > "<A href=\\1><B>\\1</B></A>", > > $text ); > > > > echo "\$text = $text<BR>"; > > echo "\$newtext = $newtext<BR>"; > > ?> > > > > ... produces this odd error: > > > > Parse error: parse error in > > /usr/local/apache/htdocs/megsoc2/test/boldlinks1.php on line 0 > > > > and all the regex has done is inserted a space instead of the > > backreference. > > > > Any ideas? > > Yes. You're using /e modifier which expects the replacement string to be > a valid PHP expression once the backreferences get substituted. From > your previous message, I can see that you want to urlencode something > too. A way to achieve this is to do this: > > $newtext = preg_replace("/<B>(.*)?<\/B>/e", > "'<A > href='.urlencode('\\1').'><B>\\1</B></A>", > $text ); > > I plan to add another modifier that will let you call a function of your > choice with the captured substrings so that you can do appropriate > processing and return replacement result instead of fussing around with > /e. > > -Andrei > > "In My Egotistical Opinion, most people's C programs should be indented > six feet downward and covered with dirt." -- Blair P. Houghton > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, e-mail: php-general-unsubscribe@lists.php.net > For additional commands, e-mail: php-general-help@lists.php.net > To contact the list administrators, e-mail: php-list-admin@lists.php.net