How to get the first element of an array in PHP? (detailed guide)

Hello everyone! I'm a beginner in PHP and I've encountered what seems like a simple task, but I can't find a universal solution. I have several arrays that I work with. Sometimes they are regular indexed arrays (with numeric keys starting from 0), sometimes they are associative arrays (with string keys). I need to get the very first element from any such array, regardless of what keys it has. Here are examples of my arrays: ```php // Indexed array $fruits = ['apple', 'banana', 'orange']; // Associative array $user = ['name' => 'Ivan', 'age' => 30, 'city' => 'Moscow']; // Array with arbitrary numeric keys $numbers = [5 => 'five', 10 => 'ten', 3 => 'three']; ``` I tried using `$array[0]`, but it only works for the first example.