Bug #80977 [NEW]: mb_ereg_search_pos is not multibyte-safe

From: v dot picture at free dot fr Operating system: Linux PHP version: 8.0.3 Package: Regexps related Bug Type: Bug Bug description:mb_ereg_search_pos is not multibyte-safe Description: ------------ Hello, The mb_ereg_search_pos function is absolutely not multibyte-safe, it actually returns the position of the match as if the string was not multibyte. The results of this function are exactly the same as if you were using preg_match_all with PREG_OFFSET_CAPTURE, even with the "unicode" flag it's simply NOT working. Test script: --------------- $string = 'jème lé ponés'; mb_ereg_search_init($string, '(?<=[ ^])\w+'); // Detect words while ($pos = mb_ereg_search_pos()) { $match = mb_ereg_search_getregs()[0]; $matchBasedOnPos = mb_substr($string, $pos[0], $pos[1]); if ($matchBasedOnPos !== $match) { throw new \LogicException("Match based on position '{$matchBasedOnPos}' does not correspond to actual match '{$match}'"); } } Expected result: ---------------- No exception thrown Actual result: -------------- LogicException: Match based on position 'é p' does not correspond to actual match 'lé' -- Edit bug report at https://bugs.php.net/bug.php?id=80977&edit=1 -- Fix committed: https://bugs.php.net/fix.php?id=80977&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=80977&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=80977&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=80977&r=needscript Try newer version: https://bugs.php.net/fix.php?id=80977&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=80977&r=support Expected behavior: https://bugs.php.net/fix.php?id=80977&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=80977&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=80977&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=80977&r=globals PHP version support discontinued: https://bugs.php.net/fix.php?id=80977&r=phptooold Daylight Savings: https://bugs.php.net/fix.php?id=80977&r=dst IIS Stability: https://bugs.php.net/fix.php?id=80977&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=80977&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=80977&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=80977&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=80977&r=mysqlcfg