function _openid_is_xri

7.x openid.inc	`_openid_is_xri($identifier)`
6.x openid.inc	`_openid_is_xri($identifier)`

Determine if the given identifier is an XRI ID.

2 calls to _openid_is_xri()

openid_discovery in drupal-6.x/modules/openid/openid.module: Perform discovery on a claimed ID to determine the OpenID provider endpoint.
_openid_normalize in drupal-6.x/modules/openid/openid.inc: Normalize the given identifier as per spec.

File

drupal-6.x/modules/openid/openid.inc, line 75: OpenID utility functions.

Code

function _openid_is_xri($identifier) {
  // Strip the xri:// scheme from the identifier if present.
  if (strpos(strtolower($identifier), 'xri://') !== FALSE) {
    $identifier = substr($identifier, 6);
  }

  // Test whether the identifier starts with an XRI global context symbol or (.
  $firstchar = substr($identifier, 0, 1);
  if (strpos("=@+$!(", $firstchar) !== FALSE) {
    return TRUE;
  }

  return FALSE;
}