求php多数组组合排列算法

<?php    class sufa{        public function main(){            $list [‘a’] = array (1,2,3);            $list [‘b’] = array (1,2);            $list [‘c’] = array (1,2,3,4);    //      $list [‘f’] = array (1,2,3,4,5);    //      $list [‘d’] = array ("+","-","*","/","%");                      foreach($list[‘a’] as $v){                $this->getsulie($list,$v,1);            }                     }        function getsulie($list,$content,$deep){            $i=0;            if($deep>count($list)){                return;            }            foreach($list as $k=>$v){                if($i==$deep){                    foreach($list[$k] as $vv){                        $vv = $content.$vv;                        if($deep==count($list)-1){                            echo $vv."<br/>";                        }else {                            $this->getsulie($list,$vv,$deep+1);                        }                    }                    break;                }                $i++;            }            return;        }    }    $s = new sufa();    $s->main();     ?>

	$list['a'] = array (1,2,3);	$list['b'] = array (4,5,6);	$list['c'] = array (7,8,9);	$list['d'] = array (10,11,12);

	$list['a'] = array (1,2,3);	$list['b'] = array (4,5,6);	$list['c'] = array (7,8,9);