url_is_external

Return TRUE if a path is external to Drupal (e.g. http://example.com).

If a path cannot be assessed by Drupal's menu handler, then we must treat it as potentially insecure.

Parameters

$path: The internal path or external URL being linked to, such as "node/34" or "http://example.com/foo".

Return value

Boolean TRUE or FALSE, where TRUE indicates an external path.

7 calls to url_is_external()

File

drupal/includes/common.inc, line 2197

Common functions that many Drupal modules will need to reference.

Code

function url_is_external($path) {
  $colonpos = strpos($path, ':');
  // Only call the slow drupal_strip_dangerous_protocols() if $path contains a
  // ':' before any / ? or #.
  return $colonpos !== FALSE && !preg_match('![/?#]!', substr($path, 0, $colonpos)) && drupal_strip_dangerous_protocols($path) == $path;
}