function _openid_link_href

7.x openid.inc	`_openid_link_href($rel, $html)`
6.x openid.inc	`_openid_link_href($rel, $html)`

Pull the href attribute out of an html link element.

1 call to _openid_link_href()

openid_discovery in drupal-6.x/modules/openid/openid.module: Perform discovery on a claimed ID to determine the OpenID provider endpoint.

File

drupal-6.x/modules/openid/openid.inc, line 197: OpenID utility functions.

Code

function _openid_link_href($rel, $html) {
  $rel = preg_quote($rel);
  preg_match('|<link\s+rel=["\'](.*)' . $rel . '(.*)["\'](.*)/?>|iUs', $html, $matches);
  if (isset($matches[3])) {
    preg_match('|href=["\']([^"]+)["\']|iU', $matches[3], $href);
    return trim($href[1]);
  }
  return FALSE;
}