{
public function visitCD($cd)
{
$logline = "{$cd->title} by {$cd->band} was purchased for {$cd->price} ";
$logline .= "at " . sdate('r') . "\n";
file_put_contents('/logs/purchases.log', $logline, FILE_APPEND);
}
}
$externalBand = 'Never Again';
$externalTitle = 'Waste of a Rib';
$externalPrice = 9.99;
$cd = new CD($externalBand, $externalTitle, $externalPrice);
$cd->buy();
$cd->acceptVisitor(new CDVisitorLogPurchase());
class CDVisitorPopulateDiscountList
{
public function visitCD($cd)
{
if ($cd->price < 10) {
$this->_populateDiscountList($cd);
}
}
protected function _populateDiscountList($cd)
{
//stub connects to sqlite and logs
}
}
$cd = new CD($externalBand, $externalTitle, $externalPrice);
$cd->buy();
$cd->acceptVisitor(new CDVisitorLogPurchase());
$cd->acceptVisitor(new CDVisitorPopulateDiscountList());
