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<?php class Doubler { public function __invoke($item) { return $item * 2; } } $array = [1, 2, 3]; $operation = new Doubler(); var_dump(array_map($operation, $array));
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
array(3) { [0]=> int(2) [1]=> int(4) [2]=> int(6) }
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/Cqhho on line 10
Process exited with code 255.

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