how startup.php is loaded

Hi,

I am new to Opencart development and new to OOPS in PHP. I would like to know how opencart loads startup.php. What it is used for ?

Pls bear with me if the questions are a bit dumb which you might encounter as I try to understand the system completely.

thanks
bhavani.

Hi,

If you want to learn then just open index.php and go though - line by line code.

From that you can understand flow of opencart system.

Hi,

thanks for replying. As directed, I started going through index.php The following code is defined in index.php in mywebsite.com/admin/ folder. Could you please explain in detail what the following code actually does ? I would like to know how it actually works.

// Registry
$registry = new Registry();

// Loader
$loader = new Loader($registry);
$registry->set('load', $loader);

Regards.
bh.

Hi,

// Registry
$registry = new Registry();

$registry saves all the necessary objects in its $data relational array,

and system pass $registry as argument to all other class for accessing that object.

// Loader
$loader = new Loader($registry);
$registry->set('load', $loader);

In loader.php, model.php and controller.php (system/engine folder),

they all defined and $registry member, which is initiated in the constructor by passing type Registry object.

Please refer system->library and system->helper files to understand it.