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<?php // This is our range of numbers $numbers = range(1, 5); // Our closure $double = function($a) { return $a * 2; }; // Use the closure as a callback here to // double the size of each element in our // range $new_numbers = array_map($double, $numbers); print implode(' ', $new_numbers); ?>

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40.85 ms | 402 KiB | 5 Q