/**
* Tries parsing the header's value as an RFC 2822 date, and failing that
* into an RFC 822 date.
*
* @param string $token
*/
public function __construct($token)
{
parent::__construct(trim($token));
$date = DateTime::createFromFormat(DateTime::RFC2822, $this->value);
if ($date === false) {
$date = DateTime::createFromFormat(DateTime::RFC822, $this->value);
}
$this->date = $date === false ? null : $date;
}
