/**
* Constructor
*
* @param string $name Node name
* @param array $args Node arguments
* @throws InvalidArgumentException If $name is not a string
* @throws InvalidArgumentException If $args is not a string
*/
public function __construct($name = null, $args = null)
{
if (!is_null($name) && !is_string($name) || $name === "") {
throw new InvalidArgumentException("Expected string for node name (e.g. `p`)", 1);
}
if (!is_null($args) && !is_string($args) || $args === "") {
throw new InvalidArgumentException("Expected string for node args (e.g. `id=\"foo\"`)", 1);
}
parent::__construct();
}
/**
* Returns HTML output inc. child nodes
*
* @return string
*/
public function output()
{
$output = '<' . $this->_tagname . '';
if ($this->_attr) {
$output .= ' ' . $this->_attr;
}
$output .= '>';
if ($this->_kind === self::NORMAL) {
if ($this->hasChildren()) {
$output .= parent::output();
}
$output .= '</' . $this->_tagname . '>';
}
return $output;
}