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<?php $x = 0; print_r(array_map(function ($y) use ($x) { $x++; return $y; }, [21,42,234,2345,]));
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [0] => 21 [1] => 42 [2] => 234 [3] => 2345 )

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