public static function getInstance()
{
if (!self::$instance instanceof self) {
self::$instance = new self();
}
return self::$instance;
}
/**
* keyword_encode
* Adds keyword decorators to specified block
*
* @param string $content - the HTML or text block to encode
* @param string $selector - optional - limit HTML encoding to specified css selector
* @return encoded HTML or text block
* @author Brent Shaffer
*/
function keyword_encode($content, $selector = null)
{
return SeoKeywordToolkit::getInstance()->parseBlock($content, $selector);
}
