<?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(array('red', 'blue', 'green'),array('small', 'med', 'large'),array('car', 'truck', 'van'));
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