我有以下一个名为$UserProfile的大数组，如下所示：
Array
(
[cf_classification] => Array
(
[field_id] => 10
[field_name] => classification
[customValue] => 11
[cg_user_group_id] => 0
[options] => Array
(
[11] => Array
(
[value] => Freshman
)
[12] => Array
(
[value] => Shopomore
)
[13] => Array
(
[value] => Junior
)
[14] => Array
(
[value] => Senior
)
[15] => Array
(
[value] => Masters
)
[16] => Array
(
[value] => Ph.D
)
)
)
)
现在，如果您从上面的数组中看到一个键值对，如下所示：
[customValue] => 11
在上面的数组中，还有一个称为options的内部级别数组，如下所示：
[options] => Array
(
[11] => Array
(
[value] => Freshman
)
[12] => Array
(
[value] => Shopomore
)
[13] => Array
(
[value] => Junior
)
[14] => Array
(
[value] => Senior
)
[15] => Array
(
[value] => Masters
)
[16] => Array
(
[value] => Ph.D
)
)
我想要实现的是将内部数组选项的键值与外部数组的键[customValue]值进行比较，并在匹配时发现将值分配给新变量$education。
简而言之，在上述情况下$education应该具有值'Freshman'因为 11 是匹配的键和值。所以所需的输出将是
$educaion = 'Freshman';
我的问题是如何通过进行最少数量的比较以编程方式做到这一点？
谢谢。
这可以
给你一些想法
我使用方法array_keys_exists（$key，$array）检查阵列上是否存在此键
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