{
$markup = "<h1>{$this->title}</h1>";
$markup = $this->extend("onRender", $markup);
return $markup;
}
}
final class ProductExtension implements Extension
{
use ExtensionTrait;
/**
* @var int
*/
private $price = 5;
/**
* @param mixed $caller
* @param string $markup
*
* @return string
*/
public function onRender($caller, $markup)
{
if (!stristr($markup, "Price")) {
$markup .= "<p>Price: {$this->price}</p>";
}
return $markup;
}
}
$product = new Product();
$product->addExtension(ProductExtension::class);
$product->render();
// <h1>New Product</h1><p>Price: 5</p>
