Re: Bug in pcre (pcre.backtrack_limit)?

Felipe Pena <felipensp@gmail.com> writes: > Hello > > Em Qua, 2008-01-30 às 20:57 +0100, Karl Pflästerer escreveu: >> Hi, >> when pcre.backtrack_limit is reached with preg_replace() the subject >> string gets truncated to a string of length zero. > > I changed the phrase about the return value (3 weeks ago) in > pcre_replace(), it can be seen at > http://docs.php.net/preg-replace, i > added "or NULL if an error occurred." > > <?php > ini_set("pcre.backtrack_limit",10); > $s = str_repeat("a", 9999); > var_dump(preg_replace("/a(.*?)b/", "\$1", $s)); > var_dump(preg_last_error()); // 2 = PREG_BACKTRACK_LIMIT_ERROR > > Output: > NULL > int(2) Thanks for the explanation; sadly your addition can only be found at docs.php.net not for example at www.php.net/manual/en/function.preg-replace.php which was until now my first choice if i wanted to look something up in the docs. IMO this is the wrong behaviour but it's at least documented :-) KP