How can PHP developers ensure the scalability of their code when creating browser games with dynamic features?

To ensure the scalability of PHP code when creating browser games with dynamic features, developers can use object-oriented programming principles, optimize database queries, implement caching mechanisms, and utilize a scalable server infrastructure.

// Example of using object-oriented programming to improve scalability
class Player {
    private $name;
    private $level;

    public function __construct($name, $level) {
        $this->name = $name;
        $this->level = $level;
    }

    public function levelUp() {
        $this->level++;
    }
}

$player1 = new Player('John', 1);
$player1->levelUp();