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

From: mickmackusa at gmail dot com Operating system: PHP version: 7.3.27 Package: PCRE related Bug Type: Bug Bug description:preg_split ignores limit flag when pattern with \K has 0-width fullstring match 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 bug report at https://bugs.php.net/bug.php?id=80865&edit=1 -- Fix committed: https://bugs.php.net/fix.php?id=80865&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=80865&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=80865&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=80865&r=needscript Try newer version: https://bugs.php.net/fix.php?id=80865&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=80865&r=support Expected behavior: https://bugs.php.net/fix.php?id=80865&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=80865&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=80865&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=80865&r=globals PHP version support discontinued: https://bugs.php.net/fix.php?id=80865&r=phptooold Daylight Savings: https://bugs.php.net/fix.php?id=80865&r=dst IIS Stability: https://bugs.php.net/fix.php?id=80865&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=80865&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=80865&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=80865&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=80865&r=mysqlcfg