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<?php function permutation(array $arr) { while($ele=array_shift($arr)) { $x=$ele; echo $x."\n"; foreach($arr as $rest) { $x.=" $rest"; echo $x."\n"; } } } permutation(array(1,2,3,4,5,6));
Output for git.master, git.master_jit, rfc.property-hooks
1 1 2 1 2 3 1 2 3 4 1 2 3 4 5 1 2 3 4 5 6 2 2 3 2 3 4 2 3 4 5 2 3 4 5 6 3 3 4 3 4 5 3 4 5 6 4 4 5 4 5 6 5 5 6 6

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