| label | IHP.View.Types |
| labelClass | IHP.View.Types |
| lastPing | IHP.AutoRefresh.Types |
| lastResponse | IHP.AutoRefresh.Types |
| Layout | IHP.View.Types, IHP.ViewSupport |
| lcfirst | IHP.NameSupport |
| LessThanOp | IHP.QueryBuilder.Types, IHP.QueryBuilder |
| LessThanOrEqualToOp | IHP.QueryBuilder.Types, IHP.QueryBuilder |
| LikeOp | IHP.QueryBuilder.Types, IHP.QueryBuilder |
| limit | IHP.QueryBuilder.Order, IHP.QueryBuilder |
| limitClause | IHP.QueryBuilder.Types |
| LinearBackoff | IHP.Job.Types.BackoffStrategy, IHP.Job.Types |
| linkNext | IHP.View.Types |
| linkPrevious | IHP.View.Types |
| listeningTo | IHP.PGListener |
| listenTo | IHP.PGListener |
| Literal | IHP.QueryBuilder.Types, IHP.QueryBuilder |
| liveReloadWebsocketUrl | IHP.ViewSupport |
| lock | IHP.AuthSupport.Lockable |
| Lockable | IHP.AuthSupport.Authentication, IHP.LoginSupport.Helper.Controller |
| lockDuration | IHP.AuthSupport.Lockable |
| logger | |
| 1 (Function) | IHP.PGListener |
| 2 (Function) | IHP.ModelSupport.Types, IHP.ModelSupport |
| 3 (Function) | IHP.FrameworkConfig.Types, IHP.FrameworkConfig, IHP.ScriptSupport |
| loggerMiddleware | IHP.RequestVault |
| loggerVaultKey | IHP.RequestVault |
| login | IHP.LoginSupport.Helper.Controller |
| logout | IHP.LoginSupport.Helper.Controller |
| logQueryTiming | IHP.ModelSupport |
| lookupAuthVault | IHP.LoginSupport.Types, IHP.LoginSupport.Middleware |
| lookupRequestVault | IHP.RequestVault.Helper, IHP.RequestVault |
| lookupSessionVault | IHP.Controller.Session |