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<?php $array = array_fill_keys( range('a', 'j'), range(0, 105, 7) ); array_walk($array, sort(...)); var_export($array);
Output for 8.1.0 - 8.1.32, 8.2.0 - 8.2.28, 8.3.0 - 8.3.22, 8.4.1 - 8.4.8
Fatal error: Uncaught TypeError: sort(): Argument #2 ($flags) must be of type int, string given in /in/HaU42:8 Stack trace: #0 [internal function]: sort(Array, 'a') #1 /in/HaU42(8): array_walk(Array, Object(Closure)) #2 {main} thrown in /in/HaU42 on line 8
Process exited with code 255.

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