斗地主项目设计

<?php/*** n张朴克牌随机分成4组** @param int $n n张朴克牌* @return array**/function groupby($n){$a = $b = $c = $d = array();$arr = array(); // n张有序的朴克牌$arr_about = array(); // n张无序的朴克牌for ($i=1; $i < $n+1; $i++) { $arr[] = $i;// 把朴克牌赋值给一个空的数组}$dw_num = $n-1;// 下标while(!empty($arr)){$rand_number = mt_rand(0,$dw_num); // 随机下标$arr_about[] = $arr[$rand_number];// 把随机下标对应的值付给无序的数组unset($arr[$rand_number]);// 清空掉这个随机下标对应的值$arr = array_values($arr);// 去掉下标$dw_num--;// 下标上限降低}$per_num = count($arr_about)/4;$a = array_slice($arr_about,0,$per_num);$b = array_slice($arr_about,$per_num,$per_num);$c = array_slice($arr_about,2*$per_num,$per_num);$d = array_slice($arr_about,3*$per_num,$per_num);return array($a,$b,$c,$d);}print_r(groupby(52));?>