Splitting A Phrase Into Variables

I have a variable called open which contains an email address and a url.

Example:
$open = "test@domain.com http://www.bbc.co.uk";

How do I split up $open so that the email address becomes $email, and the url becomes $url?

 

If there is a space between them you can use explode.

$result = explode(' ', $string);
$email = $result[0];
$url = $result[1];

PHP:

 

Thanking you