扩展配置中断应用程序

Question

Here is my code:

// Yoda namespace
namespace Yoda\Application\Config\Feature;

// use zend config
use Zend\Config\Config;

// CacheConfig class
class CacheConfig extends Config
{   
    /**
     * Default cache type for now
     * 
     * @var string
     */
    const DEFAULT_CACHE_TYPE = 'filesystem';

    /**
     * Default cache ttl for now
     * 
     * @var integer
     */
    const DEFAULT_CACHE_TTL = 3600;

    /**
     * Constructor. Creates config data for caching
     */
    public function __construct()
    {               
        $config=[
            'name'=> static::DEFAULT_CACHE_TYPE,
            'options' => [
                'ttl' => static::DEFAULT_CACHE_TTL,
                'cache_dir' => '/var/www/html/yoda/data/cache'
            ]
        ];  
        parent::__construct($config,true);
    }
}

When I use this code the application breaks and says The localhost page isn't working however when I just pass the config array into a standard Zend Config object it works fine.

Here's my usage code:

            $config=[
                'name'=> 'filesystem',
                'options' => [
                    'ttl' => 3600,
                    'cache_dir' => '/var/www/html/yoda/data/cache'
                ]
            ];              
            //works fine
            $configCache = new Config($config);

            //breaks                
            $configCache = new CacheConfig();

Not sure whats wrong here.

Answer 1

It's because in the Config class the constructor loads a static instance of itself. WHen I did this:

public function __construct()
{               
    $config=[
        'name'=> static::DEFAULT_CACHE_TYPE,
        'options' => [
            'ttl' => static::DEFAULT_CACHE_TTL,
            'cache_dir' => yoda::registry('cache_dir')
        ]
    ];
    $this->allowModifications = true;       
    foreach ($config as $key => $value) {
        if (is_array($value)) {
            $this->data[$key] = new Config($value, $this->allowModifications);
        } else {
            $this->data[$key] = $value;
        }
    }
}

It seems to work when I replace it with Config