Bug #80866 [Opn->Csd]: preg_split ignores limit flag when pattern with \K has 0-width fullstring match

Edit report at https://bugs.php.net/bug.php?id=80866&edit=1 ID: 80866 Updated by: nikic@php.net Reported by: mickmackusa at mickmack dot usa Summary: preg_split ignores limit flag when pattern with \K has 0-width fullstring match -Status: Open +Status: Closed Type: Bug Package: PCRE related PHP Version: 7.3.27 Block user comment: N Private report: N New Comment: Automatic comment on behalf of tekiela246@gmail.com Revision: http://git.php.net/?p=php-src.git;a=commit;h=282355efd5d53ba180d30794737c33898031104e Log: Fix bug #80866 Previous Comments: ------------------------------------------------------------------------ [2021-03-15 12:23:42] dharman@php.net The following pull request has been associated: Patch Name: Fix bug 80866 On GitHub: https://github.com/php/php-src/pull/6774 Patch: https://github.com/php/php-src/pull/6774.patch ------------------------------------------------------------------------ [2021-03-15 02:02:50] mickmackusa at mickmack dot usa Description: ------------ preg_split() does not respect the limit parameter when \K is used to produce a zero-width fullstring delimiter. https://3v4l.org/kQHQZ This bug seems to be present since PHP7.3. Other preg_split() calls using zero-width-match-producing regular expressions do not suffer the same bug. https://3v4l.org/3KP1T Test script: --------------- var_export(preg_split('~.{3}\K~', 'abcdefghijklm', 3)); Expected result: ---------------- array ( 0 => 'abc', 1 => 'def', 2 => 'ghijklm', ) Actual result: -------------- array ( 0 => 'abc', 1 => 'def', 2 => 'ghi', 3 => 'jkl', 4 => 'm', ) ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=80866&edit=1