Bug #73573 [Opn->Nab]: Сase-insensitive search error

Edit report at https://bugs.php.net/bug.php?id=73573&edit=1 ID: 73573 Updated by: requinix@php.net Reported by: ruk at mgpu dot ru Summary: Сase-insensitive search error -Status: Open +Status: Not a bug Type: Bug -Package: *Regular Expressions +Package: PCRE related Operating System: Windows Server 2012 R2 PHP Version: 7.0.13 Block user comment: N Private report: N New Comment: (Expected and Actual are backwards) To match non-ASCII characters you must use UTF-8 and the /u flag. '/^[a-zа-я]+$/iu' - only if the file is in UTF-8 encoding "/^[a-z\u{0430}-\u{044F}]+$/iu" https://3v4l.org/t4h9t Previous Comments: ------------------------------------------------------------------------ [2016-11-21 10:32:36] ruk at mgpu dot ru Description: ------------ In line with the processing of the Cyrillic alphabet in the regular expression key /i (case-insensitive search) error occurs Windows Server 2012 R2 IIS 8.5 PHP 7.0.9 x64 Test script: --------------- <?php header('Content-Type: text/plain; charset=windows-1251'); $RegularExpression = '/^[a-zа-я]+$/i'; $TestStrArray = array('ABC', 'abc', 'АБВ', 'абв'); foreach ($TestStrArray as $TestStr) { $Result = preg_match($RegularExpression, $TestStr); echo $TestStr; if ($Result === false) { echo ' - Error'."\r\n"; } else { echo ' - '.($Result === 0 ? 'not found' : 'found')."\r\n"; } } // foreach ?> Expected result: ---------------- ABC - found abc - found АБВ - not found абв - found Actual result: -------------- ABC - found abc - found АБВ - found абв - found ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=73573&edit=1