Use preg to pull all links from page

[mmonaco]

I am using $entirePage = file_get_contents("http://whatever.com"); to put the entire contents of a webpage into the variable. Which preg functions should I use to parse it for a regular expression I wrote and return all the matches?

Or do I need to do something with preg_match_all and use the offset flag to run generate substrings?

In additon this is my regex, if its incorrect or can be improved I'd be happy to get suggestions:

/"http://www.[a-zA-Z0-9-]+.[a-zA-Z]+[a-zA-Z0-9/-]"/

(I'm looking for it to appear in quotes)

[jazz_snob]

$matches = array();
$num_matches = preg_match_all( "{<a href=\"(.*)\">}", $page, $matches );
//see the matches
foreach( $matches as $v ){
  print_r($v);
}

Of course, you'll have to adapt it to look where there are extra spaces perhaps, or nasty <A> type tags.