/**
* @param XMLElementIterator $elements
* @param string $attr name of the attribute, '*' for every attribute
* @param string $pattern pcre based regex pattern for the attribute value
* @param bool $invert
* @throws InvalidArgumentException
*/
public function __construct(XMLElementIterator $elements, $attr, $pattern, $invert = false)
{
parent::__construct($elements, $attr);
if (false === preg_match("{$pattern}", '')) {
throw new InvalidArgumentException("Invalid pcre pattern '{$pattern}'.");
}
$this->pattern = $pattern;
$this->invert = (bool) $invert;
}
/**
* @param XMLElementIterator $elements
* @param string $attr name of the attribute, '*' for every attribute
* @param string|array $compare value(s) to compare against
* @param bool $invert
*/
public function __construct(XMLElementIterator $elements, $attr, $compare, $invert = false)
{
parent::__construct($elements, $attr);
$this->compare = (array) $compare;
$this->invert = (bool) $invert;
}