function ModuleHandler::hasImplementations

File

core/lib/Drupal/Core/Extension/ModuleHandler.php, line 366

Class

ModuleHandler

Class that manages modules in a Drupal installation.

Namespace

Code

public function hasImplementations(string $hook, $modules = NULL) : bool {
    if ($modules !== NULL) {
        foreach ((array) $modules as $module) {
            // Hook implementations usually found in a module's .install file are
            // not stored in the implementation info cache. In order to invoke hooks
            // like hook_schema() and hook_requirements() the module's .install file
            // must be included by the calling code. Additionally, this check avoids
            // unnecessary work when a hook implementation is present in a module's
            // .module file.
            if (function_exists($module . '_' . $hook)) {
                return TRUE;
            }
        }
    }
    $implementations = $this->getImplementationInfo($hook);
    if ($modules === NULL && !empty($implementations)) {
        return TRUE;
    }
    return !empty(array_intersect((array) $modules, array_keys($implementations)));
}