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run code in 150+ php & hhvm versions
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<?php function getCombinations($traits, $string = '', $i = 0) { if ($i >= count($traits)) return trim($string) . "\n"; else { foreach ($traits[$i] as $trait) return getCombinations($traits, "$string $trait", $i + 1); } } $traits = array ( array('Happy', 'Sad', 'Angry', 'Hopeful'), array('Outgoing', 'Introverted'), array('Tall', 'Short', 'Medium'), array('Handsome', 'Plain', 'Ugly') ); $combinations = getCombinations($traits); echo $combinations;
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Happy Outgoing Tall Handsome