Bug #77567 [Opn->Nab]: \s don't cache a   html decoded

Edit report at https://bugs.php.net/bug.php?id=77567&edit=1 ID: 77567 Updated by: nikic@php.net Reported by: thibaud at 42stores dot com Summary: \s don't cache a   html decoded -Status: Open +Status: Not a bug Type: Bug Package: PCRE related Operating System: Ubuntu 18.04 PHP Version: 7.2.14 Block user comment: N Private report: N New Comment: You are missing the /u modifier, to treat the string as UTF-8 and enable UCP mode: var_dump(preg_replace('/\s+/u','!',html_entity_decode(' '))); Previous Comments: ------------------------------------------------------------------------ [2019-02-04 15:15:14] thibaud at 42stores dot com Description: ------------ --- From manual page: https://php.net/function.html-entity-decode --- \s meta-character in regular expression don't cache the character resulting of a html_entity_decode of a string containing " " (using utf-8). Test script: --------------- var_dump(preg_replace('/\s+/','!',html_entity_decode(' '))); Expected result: ---------------- string(1) "!" Actual result: -------------- string(2) " " ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=77567&edit=1