public function has($key)
    {
        if (strpos($key, '.') === false) {
            return $this->hasByKey($key);
        }

        return $this->hasByPath($key);
    }
public function has($key)
    {
        if (strpos($key, '.') === false) {
            return $this->hasByKey($key);
        }

        return $this->hasByPath($key);
    }
public function has ( $ key ) { if ( strpos ( $ key , '.' ) === false ) { return $ this -> hasByKey ( $ key ) ; } return $ this -> hasByPath ( $ key ) ; }
Determine if the given configuration value exists.

@param  string $key
@return bool
Determine if the given configuration value exists .