API: New function to fetch current user id

src/Module/BaseApi.php

@@ -91,6 +91,22 @@ class BaseApi extends BaseModule
 		return (bool)self::$current_user_id;
 	}
 
+	/**
+	 * Get current user id, returns 0 if not logged in
+	 *
+	 * @return int User ID
+	 */
+	protected static function getCurrentUserID()
+	{
+		if (is_null(self::$current_user_id)) {
+			api_login(DI::app(), false);
+
+			self::$current_user_id = api_user();
+		}
+
+		return (int)self::$current_user_id;
+	}
+
 	/**
 	 * Get user info array.
 	 *