public function getConfigDir()
    {
        if (null === $this->configDir) {
            $this->configDir = $this->getRootDir() . '/app/config/';
        }

        return($this->configDir);
    }
public function getConfigDir()
    {
        if (null === $this->configDir) {
            $this->configDir = $this->getRootDir() . '/app/config/';
        }

        return($this->configDir);
    }
public function getConfigDir ( ) { if ( null === $ this -> configDir ) { $ this -> configDir = $ this -> getRootDir ( ) . '/app/config/' ; } return ( $ this -> configDir ) ; }
getConfigDir
Get the global app config directory

@return string $configDir
getConfigDir Get the global app config directory