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<?php function double($number){ return $number * $number; } $number = [1, 2, 3, 4]; $result = array_map("double", $number); print_r($result);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [0] => 1 [1] => 4 [2] => 9 [3] => 16 )

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