PHP Cache Trait

example.php

<?php

trait Cachable {
    private $cache = [];

    public function cached($method, $args) {
        echo "[Cache] Called $method\n";

        if (!isset($this->cache[$method])) {
            echo "[Cache] Saving method in cache\n";
            $this->cache[$method] = $this->$method($args);
        }

        echo $this->cache[$method];
    }
}

class MyModel  {
    use Cachable;

    public function getSlowQueryResults()
    {
        // Long operation
        return "[Result] Very long result...\n";
    }

    public function foo()
    {
        print_r($this->cache);
    }
}

$model = new MyModel();
echo $model->cached('getSlowQueryResults', []);
echo $model->cached('getSlowQueryResults', []);
$model->foo();

$model->getSlowQueryResult();