VirtueMart - 1.1 Guia do Utilizador descarregar pdf (Página 17)

Other important

Environment variables

// Load class definition file

require_once( CLASSPATH."$class.php" );

$classname = str_replace( '.class', '', $funcParams["class"]);

if( !class_exists(strtolower($classname))) {

$classname = 'vm'.$classname;

}

if( class_exists( $classname )) {

// create an object

$$classname = new $classname();

// RUN THE FUNCTION

// $ok = $class->function( $vars );

$ok = $$classname->$funcParams["method"]($vars);

}

First, the file ps_product.php is loaded, then an object of the class ps_product is created and

the function add is called on that object. The function returns true on success and false on failure.

The variable $ok stores the function result. All this code is exectuted using the PHP eval command

for creating and executing PHP code on-the-fly.

If you wonder what the variable $vars is: it's just a working copy of the superglobal $_REQUEST

Array and used as the array $d inside of the functions.

2.3.3. Other important Environment variables

Array $cart The current cart contents. The array has the following structure:

[cart] # Array (

[idx] # 1

[0] # Array (

[quantity] # 1

[product_id] # 10

[description] # Size:big; Power:100W

)

In this example, the car contains one product with the quantity of 1, the

product ID 10 and a description.

The index "idx" is an integer and contains the size of the cart (number of

different products in it, regardless of their quantity). This variable is always

available in the global $_SESSION array: $_SESSION['cart'].

Array $auth All the user information in one Array, always available in the global

$_SESSION array.

[auth] # Array (

[show_prices] # 1

[user_id] # 0

[username] # demo

[perms] #

[first_name] # guest

[last_name] #

[shopper_group_id] # 5

[shopper_group_discount] # 0.00

[show_price_including_tax] # 1

[default_shopper_group] # 1

[is_registered_customer] #

)

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