Get element from multidimensional array by path in php

config.php

<?php

/**
 * @author Silpion <tomasz@silpion.com.pl>
 */

class Config {

    protected $config = [
        'a' => [
            'b' => [
                'c' => 'ok'
            ]
        ],
    ];

    /**
     * Get element from multidimensional array by path
     * 
     * @param string $path
     * @return string
     */
    public function get($path)
    {
        $current = &$this->config;
        foreach (explode('/', $path) as $key) {
            $current = &$current[$key];
        }

        return $current;
    }

}

$config = new Config;

echo $config->get('a/b/c');
echo $config->get('a/b/e');