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<?php $word = "רחוב אלסלבדור 41 דירה 84 ירושלים"; $result = preg_replace_callback('/\w+/', function($found) { foreach ($found as $value) { return strrev($value); } }, word); var_dump($result);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
Fatal error: Uncaught Error: Undefined constant "word" in /in/rZSF9:8 Stack trace: #0 {main} thrown in /in/rZSF9 on line 8
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: Use of undefined constant word - assumed 'word' (this will throw an Error in a future version of PHP) in /in/rZSF9 on line 8 string(4) "drow"
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25
Notice: Use of undefined constant word - assumed 'word' in /in/rZSF9 on line 8 string(4) "drow"
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/rZSF9 on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/rZSF9 on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/rZSF9 on line 4
Process exited with code 255.

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