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<?php $a = [6, 12, 11]; $b = array_map(function ($i) { return (string)$i; }, $a); var_dump($b);
Output for git.master, git.master_jit, rfc.property-hooks
array(3) { [0]=> string(1) "6" [1]=> string(2) "12" [2]=> string(2) "11" }

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