php 多维数组 - 如何从子数组中获取特定值
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Multidimensional array - how to get specific values from sub-array
提问by RePho
I have the following array structure:
我有以下数组结构：
Array
(
[0] => Array
(
[product_option_id] => 236
[option_id] => 14
[name] => Masura S
[type] => select
[option_value] => Array
(
[0] => Array
(
[product_option_value_id] => 33
[option_value_id] => 53
[name] => Alb
[price] =>
[price_prefix] => +
)
[1] => Array
(
[product_option_value_id] => 35
[option_value_id] => 55
[name] => Rosu
[price] =>
[price_prefix] => +
)
)
[required] => 0
)
[1] => Array
(
[product_option_id] => 237
[option_id] => 15
[name] => Masura M
[type] => select
[option_value] => Array
(
[0] => Array
(
[product_option_value_id] => 34
[option_value_id] => 58
[name] => Rosu
[price] =>
[price_prefix] => +
)
)
[required] => 0
)
)
I find myself lost in trying to display all the [name] values from this array.
我发现自己在尝试显示此数组中的所有 [name] 值时迷失了方向。
What I am trying to do is to populate a form with dropdown selects based on the first level [name](like [name] => Masura S) and then a second dropdown select with the second level [name](like [name] => Alb).
我所试图做的是填充基于第一级下拉列表中选择一种形式[name]（如[name] => Masura S），然后第二个下拉与第二级选择[name]（像[name] => Alb）。
I would appreciate it if you have any pointers...
如果您有任何指示，我将不胜感激...
采纳答案by Belonwu Ogugua
You can populate the first select this way:
您可以通过以下方式填充第一个选择：
<select>
<?php $c=count($array);
for ( $i=0; $i < $c; $i++)
{ ?>
<option><?php echo $array[$i]['name'];?></option>
<?php } ?>
</select>
2nd select:
二选：
<select>
<?php
for ( $i=0; $i < $c; $i++)
{
$c2=count($array[$i]);
for ($j=0;$j<$c2;$j++){
?>
<option><?php echo $array[$i][$j]['name'];?></option>
<?php }} ?>
</select>
回答by Usman Ahmed
Try this:
尝试这个：
$name = array_column($array, 'name');
回答by geekuality
I'd separate the names to separate arrays like this, after that it should be easy to populate dropdowns as needed:
我会像这样将名称分开以分隔数组，之后应该很容易根据需要填充下拉列表：
$product_names = $option_names = array();
foreach ($products as $index => $product) {
$product_names[$index] = $product['name'];
foreach ($product['option_value'] as $option) {
$option_names[$index][] = $option['name'];
}
}
When you want product name for array index 0, you'd use $product_names[0] (a string) and option names for that product could be found from $option_names[0] (an array).
当您想要数组索引 0 的产品名称时，您可以使用 $product_names[0]（一个字符串）并且可以从 $option_names[0]（一个数组）中找到该产品的选项名称。
Code above doesn't care about existing ID's so if you need them for the form, you'd need to expand the code a bit more.
上面的代码不关心现有的 ID，所以如果你需要它们用于表单，你需要更多地扩展代码。
回答by Ashraf Kaabi
You will need to use a recursive function
here's an example
您将需要使用递归函数，
这是一个示例
function recursion($array) {
foreach ($array as $key => $value) {
echo $value;
if (is_array($value))
$this->recursion($value);
}
}
recursion($array);
