PHP多维数组使用值保持相同的键

Question

我试图检查一个多维数组并只保留它们匹配的键并且具有值（不是相同的值）。

所以我想检查整个数组并找回它们有价值的密钥，在所有数组中检查它们，只保留所有数组包含的密钥。

所以这是我的数组：

Array
(
    [0] => Array
        (
            [id] => 21
            [tstamp] => 1508482179
            [firstname] => test1
            [lastname] => test1
            [dateOfBirth] => 
            [gender] => 
            [company] => 
            [street] => 
            [postal] => 
            [city] => 
            [state] => 
            [country] => 
            [phone] => 
            [mobile] => 
            [fax] => 
            [email] => test1@test.com
            [website] => 
            [language] => 
            [groups] => a:1:{i:0;s:1:"1";}
            [login] => 1
            [username] => test2
            [assignDir] => 
            [homeDir] => 
            [disable] => 
            [start] => 
            [stop] => 
            [dateAdded] => 1508482142
            [lastLogin] => 0
            [currentLogin] => 0
            [loginCount] => 3
            [locked] => 0
            [session] => 
            [createdOn] => 0
        )

    [1] => Array
        (
            [id] => 2
            [tstamp] => 1508482189
            [firstname] => test2
            [lastname] => test2
            [dateOfBirth] => 
            [gender] => 
            [company] => 
            [street] => 
            [postal] => 
            [city] => 
            [state] => 
            [country] => 
            [phone] => 
            [mobile] => 
            [fax] => 
            [email] => test2@test.com
            [website] => 
            [language] => 
            [groups] => a:1:{i:0;s:1:"1";}
            [login] => 1
            [username] => test2
            [assignDir] => 
            [homeDir] => 
            [disable] => 
            [start] => 
            [stop] => 
            [dateAdded] => 1508482142
            [lastLogin] => 0
            [currentLogin] => 0
            [loginCount] => 3
            [locked] => 0
            [session] => 
            [createdOn] => 0
        )

)

代码：

$arrResultMap = array_map('array_filter', $arrResult);
$currencies = count($arrResultMap) > 1 ? call_user_func_array('array_intersect', $arrResultMap) : array_shift($arrResultMap);
print_r($currencies);

输出：

Array
(
    [id] => 1
    [groups] => a:1:{i:0;s:1:"1";}
    [login] => 1
    [loginCount] => 3
)

如你所见，有一些关键缺失。像电子邮件，名字，姓氏，tstamp等我无法看到或发现我做错了什么：）

更新： 找到解决方案而不是使用array_intersect我使用array_intersect_key。 现在它有效。

此代码工作：

$arrResultMap = array_map('array_filter', $arrResult);
$currencies = count($arrResultMap) > 1 ? call_user_func_array('array_intersect_key', $arrResultMap) : array_shift($arrResultMap);
print_r($currencies);