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<?php $chars = ["a", "b" , "c"]; $result = []; foreach (array_chunk($chars, 1) as [0 => $result[], 0 => $result[], 0 => $result[]]); var_export($result);
Output for git.master, git.master_jit, rfc.property-hooks
array ( 0 => 'a', 1 => 'a', 2 => 'a', 3 => 'b', 4 => 'b', 5 => 'b', 6 => 'c', 7 => 'c', 8 => 'c', )

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