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<?php $result = array_filter( array_map('strtoupper', explode(htmlentities("Hello World")) ), fn($v) => $v != 'O' ); var_dump($result);
Output for 8.0.0 - 8.0.10, 8.1rc1
Fatal error: Uncaught ArgumentCountError: explode() expects at least 2 arguments, 1 given in /in/tLO0s:5 Stack trace: #0 /in/tLO0s(5): explode('Hello World') #1 {main} thrown in /in/tLO0s on line 5
Process exited with code 255.
Output for 7.4.0 - 7.4.23
Warning: explode() expects at least 2 parameters, 1 given in /in/tLO0s on line 5 Warning: array_map(): Expected parameter 2 to be an array, null given in /in/tLO0s on line 5 Warning: array_filter() expects parameter 1 to be array, null given in /in/tLO0s on line 7 NULL
Output for 7.3.0 - 7.3.30
Parse error: syntax error, unexpected '=>' (T_DOUBLE_ARROW), expecting ')' in /in/tLO0s on line 6
Process exited with code 255.

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