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<?php function permutation(array $arr) { $out = array(); while($ele=array_shift($arr)) { $x=$ele; //echo $x."\n"; foreach($arr as $rest) { $x.=" $rest"; //echo $x."\n"; array_push($out, $x); } } foreach($out as $o) { echo $o."\n"; } } permutation(array("Rafting","Hiking","Running","Biking"));
Output for git.master, git.master_jit, rfc.property-hooks
Rafting Hiking Rafting Hiking Running Rafting Hiking Running Biking Hiking Running Hiking Running Biking Running Biking

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