将 3d 数组排序为 2 个单独的数组 php

Question

I have an array just like the one below but with more people.

I want to get a separate array(s) for values such as age which would be [22, 13, 19], like a function I can call like this;-

sort($ageArray, "age");

function sort (newArray, value)
{
    foreach (index in mainArray)
    {
        array_push(newArray, mainArray("age")
    }
}

I know thats wrong but something like that would be nice

Array ( [0] => Array ( 
    [username] => Admin 
    [age] => 22 
    [gender] => M 
    [email] => Admin@gmail.com 
    [kills] => 10 [deaths] => 3 
    [score] => 33000 
    [posts] => 5 ) 
[1] => Array ( 
    [username] => Jack23 
    [age] => 13 
    [gender] => M 
    [email] => Jack23@gmail.com 
    [kills] => 23 
    [deaths] => 22 
    [score] => 52000 
    [posts] => 0 ) 
[2] => Array ( 
    [username] => LucySmith 
    [age] => 19 
    [gender] => F 
    [email] => Lucy2@hotmail.com 
    [kills] => 5 
    [deaths] => 52 
    [score] => 2400 
    [posts] => 0 ))

I managed to come up with this

$a = array_values($mainArray);
$b = array_values($a[0]);
echo $b[0];

which echos "admin", so I could in theory put that in a loop to echo all the usernames and put them in the array but how would I do it for stuff like age, or posts?

Answer 1

Based on the manual:- http://php.net/manual/en/function.array-column.php

you need to use array_column() like below:-

$ages = array_column($myArray, 'age');

Also you can do it like below(@AbraCadaver suggested):-

$ages = array_column($dataArray, 'age', 'username'); 

So you can do echo $ages['Admin'];

Example output:- https://eval.in/737005

Answer 2

You can get result using foreach loop.

foreach($ageArray as $array)
{
$age[] = $array['age'];
}

print_r($age);//prints array of ages