[英]Printing a nested array on View | Codeigniter
我正在使用会话构建一个购物车,我将每个披萨添加到一个数组中并传递给会话。 数组如下,
[cart_items] => Array
(
[0] => Array
(
[item_id] => 3
[item_name] => New York-Style Pizza
[price] => 800.00
[toppings] => Array
(
[0] => Array
(
[id] => 1
[name] => Mozarella Cheese
[price] => 150.00
)
[1] => Array
(
[id] => 7
[name] => Chicken Bacon
[price] => 250.00
)
)
[toppings_price] => 0
[quantity] => 1
[price_per_item] => 800
)
)
我能够显示项目 ID、比萨名称、价格和数量但无法弄清楚显示用户在浇头列中选择的浇头名称。我该怎么做>
看法
以下代码显示了我从数组中获取值的方式,
<?php $list = $this->session->userdata('cart_items');
if($list==Null) {
print_r("There are no items in the your cart");
}else{
foreach ($list as $item=>$value){
echo "<li class='list-group-item d-flex justify-content-between lh-condensed'>";
print_r("<div>".$value['item_id']."</div>");
print_r("<div>".$value['item_name']."</div>");
print_r("<div>".$value['price']."</div>");
$toppings_names=array($value['toppings']);
foreach ($toppings_names as $name=>$val){
print_r("<div>");
print_r($val['name']);
print_r("</div>");
}
print_r("<div>".$value['quantity']."</div>");
echo "</li>";
}
}
?>
输出
我期待的输出如下
商品 ID |商品名称|价格|Toppings(选定的浇头名称)|数量
列表未显示我收到错误“未定义索引:名称”。
您必须在topping
循环,因为它也是数组,因此您可以检查其中的每个项目。
<?php
$list = $this->session->userdata('cart_items'); //Array
if ($list == null) {
print_r("There are no items in the your cart");
} else {
foreach ($list as $item => $value) {
echo "<li class='list-group-item d-flex justify-content-between lh-condensed'>";
print_r("<div>".$value['item_id']."</div>");
print_r("<div>".$value['item_name']."</div>");
print_r("<div>".$value['price']."</div>");
// toppings array is empty (nothing selected)
if ($value['toppings'] == null) {
print_r("<div>There is no toppings selected</div>");
} else {
foreach ($value['toppings'] as $val) {
// here you can access indexes id, name, price in toppings array
print_r("<div>");
print_r($val['name']);
print_r("</div>");
}
}
print_r("<div>".$value['quantity']."</div>");
echo "</li>";
}
}
?>
您可以在没有变量的情况下执行foreach
:
if (!empty($value['toppings'])) {
foreach ($value['toppings'] as $val) {
print_r("<div>");
print_r($val['name']);
print_r("</div>");
}
}
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