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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("Rafting","Hiking","Running","Biking"));
Output for git.master, git.master_jit, rfc.property-hooks
Rafting Rafting Hiking Rafting Hiking Running Rafting Hiking Running Biking Hiking Hiking Running Hiking Running Biking Running Running Biking Biking

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