private function configureVariable($configKey)
    {
        $configStaticKey = 'CONFIG_DEFAULT_' . strtoupper($configKey);
        $this->config[$configKey] = isset($this->config[$configKey]) ? $this->config[$configKey] : constant("static::$configStaticKey");
    }
private function configureVariable($configKey)
    {
        $configStaticKey = 'CONFIG_DEFAULT_' . strtoupper($configKey);
        $this->config[$configKey] = isset($this->config[$configKey]) ? $this->config[$configKey] : constant("static::$configStaticKey");
    }
private function configureVariable ( $ configKey ) { $ configStaticKey = 'CONFIG_DEFAULT_' . strtoupper ( $ configKey ) ; $ this -> config [ $ configKey ] = isset ( $ this -> config [ $ configKey ] ) ? $ this -> config [ $ configKey ] : constant ( "static::$configStaticKey" ) ; }
Configure static key

@param $configKey
Configure static key