Bug #79048 [NEW]: Turkish Capital [İ] Error in mb_strtolower();

From: Date: Tue, 31 Dec 2019 09:19:38 +0000
Subject: Bug #79048 [NEW]: Turkish Capital [İ] Error in mb_strtolower();
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-224630@lists.php.net to get a copy of this message
From: root at baransel dot dev Operating system: MacOS 10.15.2 PHP version: 7.4.1 Package: *Unicode Issues Bug Type: Bug Bug description:Turkish Capital [İ] Error in mb_strtolower(); Description: ------------ --- From manual page: https://php.net/security.hiding --- as 3v4l.org shows Output for 7.2.0 - 7.2.26 works like expected but Output for 7.3.0 - 7.4.1 does not. mb_strtolower(), cannot undercase the letter [İ], please have a look at the example. Test script: --------------- <?php $program['bolum'] = '3. Sİezon 7. Bölüm'; if(strpos(mb_strtolower($program['bolum']), 'siezon')){ var_dump('Baransel'); } https://3v4l.org/qLP4q Expected result: ---------------- I want the function to return me the undercase for letter [İ] Actual result: -------------- This is the result i'm getting => si̇ezon -- Edit bug report at https://bugs.php.net/bug.php?id=79048&edit=1 -- Fix committed: https://bugs.php.net/fix.php?id=79048&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=79048&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=79048&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=79048&r=needscript Try newer version: https://bugs.php.net/fix.php?id=79048&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=79048&r=support Expected behavior: https://bugs.php.net/fix.php?id=79048&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=79048&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=79048&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=79048&r=globals PHP version support discontinued: https://bugs.php.net/fix.php?id=79048&r=phptooold Daylight Savings: https://bugs.php.net/fix.php?id=79048&r=dst IIS Stability: https://bugs.php.net/fix.php?id=79048&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=79048&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=79048&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=79048&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=79048&r=mysqlcfg

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