Text

   public function textPlaceholderAction(){
        $this->disableViewAutoRender();

        $text = 'Hello %Text(firstName); %Text(lastName);!';
        $placeholder = new Pimcore_Placeholder();

        $params = array('firstName' => 'Bart',
                        'lastName' => 'Simpson');

        $replaced = $placeholder->replacePlaceholders($text, $params);
        echo $replaced; //Will be: Hello Bart Simpson!
    }