function UrlHelper::isExternal

Determines whether a path is external to Drupal.

An example of an external path is http://example.com. If a path cannot be assessed by Drupal's menu handler, then we must treat it as potentially insecure.

Parameters

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

Return value

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

18 calls to UrlHelper::isExternal()

ComponentPluginManager::translateLibraryPaths in core/lib/Drupal/Core/Theme/ComponentPluginManager.php

Changes the library paths, so they can be used by the library system.

CredentialForm::validatePaths in core/modules/migrate_drupal_ui/src/Form/CredentialForm.php

The #element_validate handler for the source path elements.

DisplayPluginBase::getMoreUrl in core/modules/views/src/Plugin/views/display/DisplayPluginBase.php

Get the more URL for this view.

Endpoint::__construct in core/modules/media/src/OEmbed/Endpoint.php

Endpoint constructor.

FieldPluginBase::renderText in core/modules/views/src/Plugin/views/field/FieldPluginBase.php

Performs an advanced text render for the item.

... See full list

File

core/lib/Drupal/Component/Utility/UrlHelper.php, line 263

Class

UrlHelper

Helper class URL based methods.

Namespace

Drupal\Component\Utility

Code

public static function isExternal($path) {
    $colon_position = strpos($path, ':');
    // Some browsers treat \ as / so normalize to forward slashes.
    $path = str_replace('\\', '/', $path);
    // If the path starts with 2 slashes then it is always considered an
    // external URL without an explicit protocol part.
    return str_starts_with($path, '//') || preg_match('/^\\p{C}/u', $path) !== 0 || $colon_position !== FALSE && !preg_match('![/?#]!', substr($path, 0, $colon_position)) && static::stripDangerousProtocols($path) == $path;
}