Bug #76512 [Opn]: \w no longer includes unicode characters

Edit report at https://bugs.php.net/bug.php?id=76512&edit=1 ID: 76512 Updated by: cmb@php.net Reported by: leo dot feyer at gmail dot com Summary: \w no longer includes unicode characters Status: Open Type: Bug Package: PCRE related Operating System: MacOS PHP Version: 7.3.0alpha2 Block user comment: N Private report: N New Comment: It seems to me that this PCRE_UCP[1] should actually be PCRE2_UCP. [1] <https://github.com/php/php-src/blob/5eb1f92f31cafc48384f9096012f421b37f6d425/ext/pcre/php_pcre.c#L676> Previous Comments: ------------------------------------------------------------------------ [2018-06-21 13:47:21] leo dot feyer at gmail dot com Description: ------------ The \w escape sequence no longer includes unicode characters in PHP 7.3. See https://3v4l.org/uJKEC I don't know if this is intended, but since the change is not mentioned in the UPGRADING file, it might be not. Test script: --------------- var_dump(preg_match('/\w/u', 'ä')); Expected result: ---------------- The test script returns int(1) on PHP <7.3 and int(0) on PHP 7.3. ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=76512&edit=1