我有一个名为 $UserProfile 的大数组，如下所示:
Array
(
[cf_classification] => Array
(
[field_id] => 10
[field_name] => classification
[customValue] => 11
[cg_user_group_id] => 0
[options] => Array
(
[11] => Array
(
[value] => Freshman
)
[12] => Array
(
[value] => Shopomore
)
[13] => Array
(
[value] => Junior
)
[14] => Array
(
[value] => Senior
)
[15] => Array
(
[value] => Masters
)
[16] => Array
(
[value] => Ph.D
)
)
)
)
现在如果你从上面的数组中看到有一个键值对如下:
[customValue] => 11
在上面的数组中还有一个名为options的内层数组如下:
[options] => Array
(
[11] => Array
(
[value] => Freshman
)
[12] => Array
(
[value] => Shopomore
)
[13] => Array
(
[value] => Junior
)
[14] => Array
(
[value] => Senior
)
[15] => Array
(
[value] => Masters
)
[16] => Array
(
[value] => Ph.D
)
)
我想要实现的是将 inner array 选项的键值与 outer array 的键 [customValue] 的值进行比较找到匹配后，将值分配给新变量 $education。
简而言之，在上面的例子中 $education 应该有值 'Freshman' 因为 11 是匹配的键和值。所以所需的输出将是
$educaion = 'Freshman';
我的问题是如何通过进行最少数量的比较以编程方式做到这一点？
谢谢。
最佳答案
这可以给你一些想法
我使用了 array_keys_exists($key, $array) 方法 检查此键是否存在于数组中
你也可以看看这个 http://php.net/manual/en/ref.array.php
<?php
$user_profile = array(
'cf_classification' => array(
'field_id' => 10,
'field_name' => 'classification',
'customValue' => 11,
'cg_user_group_id' => 0,
'options' => array(
11 => array(
'value' => 'Freshman'
),
12 => array(
'value' => 'Shopomore'
),
13 => array(
'value' => 'Junior'
),
14 => array(
'value' => 'Senior'
),
15 => array(
'value' => 'Masters'
),
16 => array(
'value' => 'Ph.D'
)
)
)
);
$custom_field = $user_profile['cf_classification']['customValue'];
$education = '';
$options = $user_profile['cf_classification']['options'];
# check if the $custom_field is in the options of user_profile['cf_classification']
# using the array_key_exist method
if (array_key_exists($custom_field, $options)) {
# to get the value of the custom field then you need to traverse
# the array for its value
$education = $options[$custom_field]['value'];
} else {
$education = "not found";
}
echo $education;
这将打印
Freshman
关于php - 如何比较内部数组键和值并在 PHP 中相应地设置变量的值？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/28162846/