Bug #79363 [Nab]: \p{L} doesn't work alongside \p{Arabic} in a character class

Edit report at https://bugs.php.net/bug.php?id=79363&edit=1 ID: 79363 User updated by: halaeiv at gmail dot com Reported by: halaeiv at gmail dot com Summary: \p{L} doesn't work alongside \p{Arabic} in a character class Status: Not a bug Type: Bug Package: PCRE related Operating System: Ubuntu PHP Version: 7.4.3 Assigned To: cmb Block user comment: N Private report: N New Comment: PCRE 10.35 is released with the bug being fixed. But it is not still used in PHP 7.4 branch. So I believe this issue is now a PHP bug and should be reopened. Any plan to fix? Previous Comments: ------------------------------------------------------------------------ [2020-03-11 08:49:30] cmb@php.net Indeed, this is not a bug in PHP, but rather in libpcre. In libpcre 10.34, the behavior has been improved, but is still not quite right (with JIT enabled): 00000000000 lower UPPER ------------------------------------------------------------------------ [2020-03-11 08:04:39] halaeiv at gmail dot com There is a related bug report in pcre: https://bugs.exim.org/show_bug.cgi?id=2432 The bug's status is new, but it is mentioned that it was fixed in 10.34. I hope the next PHP version will fix it. There can be some additional tests to check. Note: the preg works with (*NO_JIT). ------------------------------------------------------------------------ [2020-03-10 13:37:17] halaeiv at gmail dot com Description: ------------ I ran the following code in both PHP 7.2.28 and PHP 7.4.3. The output of PHP 7.4.3 is wrong. Basically, adding a \p{Arabic} after \p{L} seems to causes \p{L} to match uppercases and spaces, instead of letters. Test script: --------------- $str = 'lower UPPER'; echo(preg_replace('/[\p{L}\p{Arabic}]/', '0', $str)); echo "\n"; echo(preg_replace('/[^\p{L}\p{Arabic}]/', '0', $str)); echo "\n"; Expected result: ---------------- 00000 00000 lower0UPPER Actual result: -------------- lower000000 00000 UPPER ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=79363&edit=1