这是递归解决方案：
function combinations($arrays, $i = 0) { if (!isset($arrays[$i])) { return array(); } if ($i == count($arrays) - 1) { return $arrays[$i]; } // get combinations from subsequent arrays $tmp = combinations($arrays, $i + 1); $result = array(); // concat each array from tmp with each element from $arrays[$i] foreach ($arrays[$i] as $v) { foreach ($tmp as $t) { $result[] = is_array($t) ? array_merge(array($v), $t) : array($v, $t); } } return $result;}print_r( combinations( array( array('A1','A2','A3'), array('B1','B2','B3'), array('C1','C2') ) ));
