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<?php $input = "1;2;3;4;5;6;7;8;9"; $n = 2; echo implode(';', array_merge(array_slice($arr = explode(';', $input), -$n), array_slice($arr, $n, -$n), array_slice($arr, 0, $n)));
Output for git.master, git.master_jit, rfc.property-hooks
8;9;3;4;5;6;7;1;2

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