On Tue, 26 Jan 2010, Laurent Raufaste wrote: > I'm using PCRE 6.7.7.4 2008-07-04 with PHP, and I encountered a problem. The > PHP developpers told me to report it to you.
I know nothing about PHP, but I guess that's a PHP variant of PCRE 6.7 (July 2006), which is now a very old version. The current release of PCRE is 8.01. Many bugs have been fixed in the meantime. > When I try to preg_replace a 2654 long string, I get a > PREG_BACKTRACK_LIMIT_ERROR However, with any version of PCRE, it is trivially easy to write a regex that requires a vast amount of resources for tracebacks because the search tree is very large indeed. > Why does it hits the limit with a short string like this ? There are discussions about this kind of thing in the pcreperform and pcrestack man pages. Philip -- Philip Hazel -- ## List details at http://lists.exim.org/mailman/listinfo/pcre-dev
