的foreach

Question

不确定这是否可行但是这里...我需要获得indexes

中包含的数组的object的所有内容

的foreach

<?php foreach($all_orders as $key => $val) : ?>

<?php 
    $cart = unserialize($val->cart);  
    $keys = array_keys($cart); 
    $x = count($keys); 
    $index = $keys[$x]; 
    $cart = $cart[$index]; 
?>

<?php $val->field_name; ?>

<?php endforeach; ?>

的var_dump

array (size=3)
  0 => 
    object(stdClass)[22]
      public 'tracking_num' => string '1Z12345E1512345676' (length=18)
      public 'order_status' => string '1' (length=1)
      public 'cust_id' => string '10' (length=2)
      public 'cart' => string 'a:1:{s:32:"d9082c0e32bb353796d3bf8ebba34f71";a:9:{s:5:"rowid";s:32:"d9082c0e32bb353796d3bf8ebba34f71";s:2:"id";s:9:"101_44068";s:3:"qty";s:1:"1";s:5:"price";s:5:"104.5";s:4:"name";s:13:"Business Card";s:5:"image";s:18:"business-cards.gif";s:4:"ship";a:3:{s:6:"Ground";d:9.730000000000000426325641456060111522674560546875;s:11:"2nd Day Air";d:18.53999999999999914734871708787977695465087890625;s:9:"Overnight";d:26.269999999999999573674358543939888477325439453125;}s:7:"options";a:2:{s:17:"Print Description";s:16'... (length=784)
      public 'shipping_type' => string 'Overnight' (length=9)
      public 'shipping_cost' => string '26.27' (length=5)
      public 'order_sub_total' => string '104.50' (length=6)
      public 'order_total' => string '130.77' (length=6)
      public 'id' => string '30' (length=2)
      public 'timestamp' => string '2012-10-13 00:52:30' (length=19)
  1 => 
    object(stdClass)[23]
      public 'tracking_num' => string '' (length=0)
      public 'order_status' => string '0' (length=1)
      public 'cust_id' => string '10' (length=2)
      public 'cart' => string 'a:2:{s:32:"d7f14d223f7873bf93a3c0670b01609b";a:9:{s:5:"rowid";s:32:"d7f14d223f7873bf93a3c0670b01609b";s:2:"id";s:9:"101_96866";s:3:"qty";s:1:"1";s:5:"price";s:5:"84.25";s:4:"name";s:13:"Business Card";s:5:"image";s:18:"business-cards.gif";s:4:"ship";a:3:{s:6:"Ground";d:9.730000000000000426325641456060111522674560546875;s:11:"2nd Day Air";d:18.53999999999999914734871708787977695465087890625;s:9:"Overnight";d:26.269999999999999573674358543939888477325439453125;}s:7:"options";a:2:{s:17:"Print Description";s:16'... (length=1582)
      public 'shipping_type' => string 'Ground' (length=6)
      public 'shipping_cost' => string '37.62' (length=5)
      public 'order_sub_total' => string '622.25' (length=6)
      public 'order_total' => string '659.87' (length=6)
      public 'id' => string '31' (length=2)
      public 'timestamp' => string '2012-10-13 00:53:20' (length=19)
  2 => 
    object(stdClass)[24]
      public 'tracking_num' => string '' (length=0)
      public 'order_status' => string '0' (length=1)
      public 'cust_id' => string '10' (length=2)
      public 'cart' => string 'a:4:{s:32:"7670d6182aaad174954c5619079f48a1";a:9:{s:5:"rowid";s:32:"7670d6182aaad174954c5619079f48a1";s:2:"id";s:9:"101_32840";s:3:"qty";s:1:"1";s:5:"price";s:5:"84.25";s:4:"name";s:13:"Business Card";s:5:"image";s:18:"business-cards.gif";s:4:"ship";a:3:{s:6:"Ground";d:9.730000000000000426325641456060111522674560546875;s:11:"2nd Day Air";d:18.53999999999999914734871708787977695465087890625;s:9:"Overnight";d:26.269999999999999573674358543939888477325439453125;}s:7:"options";a:2:{s:17:"Print Description";s:16'... (length=3145)
      public 'shipping_type' => string 'Overnight' (length=9)
      public 'shipping_cost' => string '224.46' (length=6)
      public 'order_sub_total' => string '1,000.75' (length=8)
      public 'order_total' => string '1225.21' (length=7)
      public 'id' => string '32' (length=2)
      public 'timestamp' => string '2012-10-13 01:11:03' (length=19)

此代码包含在foreach内.var $cart包含ARRAY的对象，其中包含多个indexes。如果我将$x替换为0，则循环将显示cart数组中的第一个索引。但是，有些cart包含的内容超过＆gt; 1指数。

count($keys)正确地回显了cart数组中的索引数。例如，我有3个推车。

cart 1有1 index
cart 2有2 index
cart 3有4 index

如果我echo count($keys)我会回来1 2 4

如何为每个循环单独将这些值（按顺序）传递给$x var？

请注意购物车如何拥有超过1个索引值

期望输出：

每个cart都包含一个包含多个产品的数组。 foreach必须遍历并在cart内显示数组中的每个产品。基于上面显示的var_dump，cart数组的预期输出应该在表中，如下所示：

<tr>0</tr> /*cart 1 has 1 index in the array*/
<tr>01</tr> /*cart 2 has 2 index in the array*/
<tr>0123</tr> /*cart 3 has 4 index in the array*/

Answer 1

如果我理解你的问题 - 而且我不确定 - 你可以在你没有展示的循环中使用一个简单的foreach循环。（或者至少在我写这个答案的时候不是问题 - 也许编辑你的问题来表明它，嗯？）

这个内部foreach循环将循环显示$keys的值，如下所示：

foreach ($keys as $this_key) {
    // whatever you want to do with the values of $keys here
    // each value will be available as $this_key
}

Answer 2

数组索引从0开始，因此你应该尝试：

$x = count($keys) -1
$index = $keys[$x]

所有索引都保存在$ keys中，您可以遍历它以获取$cart[$keys[0]], $cart[$keys[1]], ...

等各自的元素

这将为您提供$index中数组的最后一个数组键。

或者我建议您使用以下内容循环遍历数组$ cart的所有键：

foreach($cart as $key=>$value){
   $cart[$key]; $value //Do whatever you want with the cart with the index $key or its value $value.
}

Answer 3

你可以尝试如下

您的每个订单都可以有多个购物车，每个购物车都有多个商品。您想在每个购物车中显示商品数量。

<?php 
    $cart = unserialize($val->cart);  
    $keys = array_keys($cart); // this will give you # of carts into one order
    //if now you want to count # of items into each cart then
    foreach($keys as $val){
      echo count($cart[$val]);
    }

?>

如何在foreach中传递一个变量来获取数组的所有索引

的foreach

的var_dump

3 个答案: