Bug #80865 [Opn]: preg_split ignores limit flag when pattern with \K has 0-width fullstring match

Edit report at https://bugs.php.net/bug.php?id=80865&edit=1 ID: 80865 User updated by: mickmackusa at mickmackusa dot com Reported by: mickmackusa at mickmackusa dot com Summary: preg_split ignores limit flag when pattern with \K has 0-width fullstring match Status: Open Type: Bug Package: PCRE related PHP Version: 7.3.27 Block user comment: N Private report: N New Comment: changed reporter identification Previous Comments: ------------------------------------------------------------------------ [2021-03-15 01:15:54] mickmackusa at mickmackusa dot com 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=80865&edit=1