Bug #66997 [NEW]: function callback problem

From: b4umelody at gmail dot com Operating system: ubuntu PHP version: 5.4.26 Package: Arrays related Bug Type: Bug Bug description:function callback problem Description: ------------ test script working on 5.4.17 version but same script not working on 5.4.26 version.I think function callback problem on 5.4.26 version Test script: --------------- <?php $str1 = "Samsung Television 21 Television new"; $syns = [ 'tv' => ['sdds', 'Television new', 'Television11'] ]; $str1 = array_reduce(array_keys($syns), function($c, $x) use ($syns) { return $c = preg_replace('/\b'.join('\b|\b', $syns[$x]).'\b/', $x, $c); }, $str1); $arr1 = explode(' ', $str1); var_dump($arr1); ?> Expected result: ---------------- string 'Samsung Television 21 tv' (length=24) Actual result: -------------- NULL -- Edit bug report at https://bugs.php.net/bug.php?id=66997&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=66997&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=66997&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=66997&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=66997&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=66997&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=66997&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=66997&r=needscript Try newer version: https://bugs.php.net/fix.php?id=66997&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=66997&r=support Expected behavior: https://bugs.php.net/fix.php?id=66997&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=66997&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=66997&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=66997&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=66997&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=66997&r=dst IIS Stability: https://bugs.php.net/fix.php?id=66997&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=66997&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=66997&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=66997&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=66997&r=mysqlcfg