Page 245 - Beginning PHP 5.3

Chapter 8: Objects

public function addProduct( Sellable $product ) {
$this- > _productList[] = $product;
}

public function stockUp() {
foreach ( $this- > _productList as $product ) {
$product- > addStock( 100 );
}
}
}

$tv = new Television;
$tv- > setScreenSize( 42 );
$ball = new TennisBall;
$ball- > setColor( “yellow” );
$manager = new StoreManager();
$manager- > addProduct( $tv );
$manager- > addProduct( $ball );
$manager- > stockUp();
echo “ < p > There are “. $tv- > getStockLevel() . “ “ . $tv- > getScreenSize();
echo “-inch televisions and “ . $ball- > getStockLevel() . “ “ .
$ball- > getColor();
echo “ tennis balls in stock. < /p > ”;
echo “ < p > Selling a television... < /p > ”;
$tv- > sellItem();
echo “ < p > Selling two tennis balls... < /p > ”;
$ball- > sellItem();
$ball- > sellItem();
echo “ < p > There are now “. $tv- > getStockLevel() . “ “ . $tv- > getScreenSize();
echo “-inch televisions and “ . $ball- > getStockLevel() . “ “ .
$ball- > getColor();
echo “ tennis balls in stock. < /p > ”;
? >

< /body >

< /html >

Figure 8 - 7
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