我需要为我的脚本添加一个while循环。这是$ points＆lt; 17（draw_cards）
也许你可以猜到，这是一款纸牌游戏。我希望它就这么简单，因为它不起作用。它陷入无休止的循环中。
if(FORM_stand("Stand")){
while ($total_dealer < 17){
list_dealer_hand();
draw_dealer_card();
}
}
如果我运行我的脚本，它会永远持续下去。显示我的例子7, 7, 3, 7, 3, 9, 7, 3, 9, 2, 7, 3, 9, 2, 6, 7, 3, 9, 2, 6, 10, 7, 3, 9, 2, 6, 10, Ace, 7, 3, 9, 2, 6, 10, Ace, 5, 7, 3, 9, 2, 6, 10, Ace, 5, Queen, 7, 3, 9, 2, 6, 10, Ace, 5, Queen, Jack, 7, 3, 9, 2, 6, 10, Ace, 5, Queen, Jack, King, 7, 3, 9, 2, 6, 10, Ace, 5, Queen, Jack, King, 4, 7, 3, 9, 2, 6, 10, Ace, 5, Queen, Jack, King, 4, 8,
最终重复之前
Notice: Undefined index
但是如果我要使用的话：
if(FORM_stand("Stand")){
list_dealer_hand();
if ($total_dealer < 17){
draw_dealer_card();
}
}
我需要手动按Stand几次，因为它是if但是这样它会持续绘制卡片，直到他的分数为17或更高，这意味着If有效但是While永远不会结束。
我不知道您是否需要更多信息，如果您这样做，请随时提出。因为我已经坚持这个循环2天了。似乎没有人能够帮助我。
提前致谢！
PS：如果我在显示所有错误后运行while循环并按下control + f5，它会显示：3, 10, 7, 9, 6, King, 8, Queen, Jack, 4, 2, Ace, 5, ,并在点部分显示：85
Busted!
我知道所有的积分都是95，但是因为我使用了一个案例给我的Ace，如果积分是＆gt; 11它将计为1而不是11.Mabye这一点会帮助你！
list_dealer_hand（）
function list_dealer_hand() {
foreach($_SESSION["dealer_hand"] as $dealer_card=>$points) {
echo $dealer_card;
echo ', ';
}
}
和draw_dealer_card（）
function draw_dealer_card() {
$dealer_card = array_rand($_SESSION["dealer_pile"]);
$_SESSION["dealer_hand"][$dealer_card] = $_SESSION["dealer_pile"][$dealer_card];
unset($_SESSION["dealer_pile"][$dealer_card]);
}
我的积分点系统如下：
$total_dealer = 0;
$text_dealer = '';
foreach($_SESSION["dealer_hand"] as $dealer_card=>$dealer_points) {
switch($dealer_card)
{
case "King":
case "Queen":
case "Jack":
case "10":
$total_dealer += 10;
break;
case "Ace":
if($total_dealer >= 11)
{
$total_dealer += 1;
}else{
$total_dealer += 11;
}
break;
case "9":
$total_dealer += 9;
break;
case "8":
$total_dealer += 8;
break;
case "7":
$total_dealer += 7;
break;
case "6":
$total_dealer += 6;
break;
case "5":
$total_dealer += 5;
break;
case "4":
$total_dealer += 4;
break;
case "3":
$total_dealer += 3;
break;
case "2":
$total_dealer += 2;
break;
}
}
编辑：会话经销商_pile
if(!isset($_SESSION["dealer_pile"])) $_SESSION["dealer_pile"] = array(
2 => 2,
3 => 3,
4 => 4,
5 => 5,
6 => 6,
7 => 7,
8 => 8,
9 => 9,
10 => 10,
'Jack' => 10,
'Queen' => 10,
'King' => 10,
'Ace' => 11 );
答案 0 :(得分：3)
draw_dealer_card()需要增加$total_dealer;，否则循环将永远存在。
你只计算一次总计，而不是再次计算，这就是为什么经销商总数永远不会增加，因此永远不会超过17。
将转换卡的代码放入其自己的函数中，以便在任何地方使用
<?php
/**
* return the value of the card for the current total
* @param string $card the card to convert to count
* @param int $current_total the current total of the player/dealer
* @return int the value of $card
*/
function get_card_value($card, $current_total) {
switch($card) {
case "King":
case "Queen":
case "Jack":
return 10;
case "Ace":
return ($current_total > 10) ? 1 : 11;
case "10":
case "9":
case "8":
case "7":
case "6":
case "5":
case "4":
case "3":
case "2":
return (int) $card;
}
return 0; // this should not happen probably abort here
}
从这里开始就很容易，像这样编辑你的while循环：
<?php
while ($total_dealer < 17){
list_dealer_hand();
draw_dealer_card();
/* this is bad code using end(),
* which might not always get the last drawn card.
* Also calculation of total is wrong this way:
* What happens if dealer draws Ace, Ace, Ace, King?
* Should be 1+1+1+10 = 13 but will result in 11+1+1+10=23
*/
$total_dealer += get_card_value(end($_SESSION['dealer_hand']), $total_dealer);
}
为了使您的代码更加健壮，请添加一个函数calc_total(array $cards)，它会计算一组卡片的总数，并在while循环中使用它来重新计算经销商总数。像这样的函数可能看起来像这样
<?php
function calc_total(array $cards) {
//this is a little tricky since aces must be counted last
$total = 0;
$aces = array();
foreach($cards as $card) {
if($card === 'Ace') {
$aces[] = $card;
continue; // next $card
}
$total += get_card_value($card, $total);
}
// add aces values
if (($total + 10 + count($aces)) > 21) {
//all aces must count 1 or 21 will be exceeded
return $total + count($aces);
}
foreach($aces as $card) {
$total += get_card_value($card, $total);
}
return $total;
}
现在你的while循环可以像这样轻松了
<?php
while ($total_dealer < 17){
list_dealer_hand();
draw_dealer_card();
// recalculate the dealers total
$total_dealer = calc_total($_SESSION['dealer_hand']);
}
数字和字符串键的混合是完全有效的PHP，但也大多数时候误导。在你的堆中你只需要卡片，价值不是很重要，你可以通过拨打get_card_value($card, 0)随时获得卡片值。所以设置这样的堆：
<?php
if(!isset($_SESSION["dealer_pile"])) $_SESSION["dealer_pile"] = array(
'Jack', 'Queen', 'King', 'Ace', '10', '9', '8', '7', '6', '5', '4', '3', '2'
);
同时更改draw_dealer_card功能
<?php
function draw_dealer_card() {
//get a key
$key = array_rand($_SESSION["dealer_pile"]);
// add the card to the hand
$_SESSION["dealer_hand"][] = $_SESSION["dealer_pile"][$key];
/*
* why are you removing it from pile, the pile might
* contain multiple cards of each type
*/
// unset($_SESSION["dealer_pile"][$dealer_card]);
}
注意$_SESSION['dealer_hand']不再是关联的。每当您向其添加卡片时都要考虑到这一点，只需使用$_SESSION["dealer_hand"][] = $the_new_card
答案 1 :(得分：2)
您当前的代码获取$total_dealer的静态值并在没有递增的情况下检入while循环，这会导致无限循环。所以尝试将foreach {}循环放入while循环中，这将允许$total_dealer递增每次选择后的值。
if(FORM_stand("Stand")){
$total_dealer = 0;
while ($total_dealer < 17){
list_dealer_hand();
draw_dealer_card();
$text_dealer = '';
foreach($_SESSION["dealer_hand"] as $dealer_card=>$dealer_points) {
switch($dealer_card)
{
case "King":
case "Queen":
case "Jack":
case "10":
$total_dealer += 10;
break;
case "Ace":
if($total_dealer >= 11)
{
$total_dealer += 1;
}else{
$total_dealer += 11;
}
break;
case "9":
$total_dealer += 9;
break;
case "8":
$total_dealer += 8;
break;
case "7":
$total_dealer += 7;
break;
case "6":
$total_dealer += 6;
break;
case "5":
$total_dealer += 5;
break;
case "4":
$total_dealer += 4;
break;
case "3":
$total_dealer += 3;
break;
case "2":
$total_dealer += 2;
break;
}
}
}
}
答案 2 :(得分：0)
试试这个
$total_dealer=0;
if(FORM_stand("Stand")){
while ($total_dealer < 17){
list_dealer_hand();
draw_dealer_card();
$total_dealer =$total_dealer+1;
}
}