kombinasi

<?php
function getCombinations($base,$n){
	$baselen = count($base);
		if($baselen == 0){
			return;
		}
		if($n == 1){
			$return = array();
			foreach($base as $b){
			$return[] = array($b);
		}
			return $return;
		}else{
			$oneLevelLower = getCombinations($base,$n-1);

			$newCombs = array();

			foreach($oneLevelLower as $oll){

				$lastEl = $oll[$n-2];
				$found = false;
			foreach($base as $key => $b){
				if($b == $lastEl){
					$found = true;
				continue;

			}
				if($found == true){
				if($key < $baselen){
					$tmp = $oll;
					$newCombination = array_slice($tmp,0);
					$newCombination[]=$b;
					$newCombs[] = array_slice($newCombination,0);
			}
			}
		}
	}
}
	return $newCombs;
}
$set=array(1, 2, 3, 4);
$count = count($set);
$result = array();
	for($i = 1; $i <= $count; $i++){
		$result[] = getCombinations($set, $i);
	}
	echo "<pre>";
	print_r($result);
	echo "</pre>";
	$res = count($result);
for($i=0;$i<$res;$i++){
for($f=0;$f<$res;$f++){
for($g=0;$g<$res;$g++){
echo $result[$i][$f][$g];
}
}
}


?>