Bug #77777 [NEW]: str_word_count function for Chinese text

From: deng5765 at gmail dot com Operating system: CentOS and MacOS PHP version: 7.3.3 Package: Strings related Bug Type: Bug Bug description:str_word_count function for Chinese text Description: ------------ Different behaviour of str_word_count function in different operating system(CentOS and MacOS) for Chinese text. It return 0 for pure Chinese text under CentOS. I tested PHP 7.1 and PHP 7.2, same issue. Seems can't find any clue in doc. Test script: --------------- <?php $content = '我不是鱼测试'; echo 'PHP OS: ', PHP_OS, "\n"; echo 'PHP Version: ', PHP_VERSION, "\n"; echo 'Word Count: ', str_word_count($content), "\n"; Expected result: ---------------- PHP OS: Darwin PHP Version: 7.3.3 Word Count: 6 PHP OS: Linux PHP Version: 7.3.3 Word Count: 6 Actual result: -------------- PHP OS: Darwin PHP Version: 7.3.3 Word Count: 6 PHP OS: Linux PHP Version: 7.3.3 Word Count: 0 -- Edit bug report at https://bugs.php.net/bug.php?id=77777&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=77777&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=77777&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=77777&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=77777&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=77777&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=77777&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=77777&r=needscript Try newer version: https://bugs.php.net/fix.php?id=77777&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=77777&r=support Expected behavior: https://bugs.php.net/fix.php?id=77777&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=77777&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=77777&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=77777&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=77777&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=77777&r=dst IIS Stability: https://bugs.php.net/fix.php?id=77777&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=77777&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=77777&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=77777&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=77777&r=mysqlcfg