<?php

namespace Me

use Humankind;
use IvanHsu;

class LifePurpose extends Humankind
{
    private $ivanhsu;

    public function __construct(
        IvanHsu $ivanhsu
    ) {
        $this->ivanhsu = $ivanhsu;
    }

    $myAttemptions = ['guitar', 'japanese', 'writing', 'programming'];

    $myTrueCalling = array_intersect($this->ivanhsu->interests, $myAttemptions)[0];

    echo $myTrueCalling; // programming
}