PHPフレームワークでarray_map()などの関数を使用する方法

<?php
    $arr = [
        [&#39;a&#39; => &#39;aa&#39;,&#39;b&#39; => &#39;bb&#39;,],
        [&#39;c&#39; => &#39;cc&#39;,&#39;d&#39; => &#39;dd&#39;,],
        [&#39;e&#39; => &#39;ee&#39;,&#39;f&#39; => &#39;ff&#39;,],
    ];

    function test($v){        $v[&#39;add&#39;] = 0;
        return $v;
    }    $arr = array_map("test",$arr);
    print_r($arr);?>

Array(
    [0] => Array
        (
            [a] => aa            [b] => bb            [add] => 0
        )

    [1] => Array
        (
            [c] => cc            [d] => dd            [add] => 0
        )

    [2] => Array
        (
            [e] => ee            [f] => ff            [add] => 0
        ))

<?php
namespace User\Controller;

use Common\Controller\ManagerController;

class DataController extends Controller
{
    public function get_data()
    {
        $arr = [
            // 数据填充
        ];
        
        $arr = array_map([$this,&#39;_add_param&#39;],$arr);
        dump($arr);
    } 

    private function _add_param($value){
        $value[&#39;add&#39;] = &#39;xxx&#39;;
        return $value;
    }
}