trigger_error Generates a user-level error/warning/notice message &reftitle.description; booltrigger_error stringmessage interror_levelE_USER_NOTICE Used to trigger a user error condition, it can be used in conjunction with the built-in error handler, or with a user defined function that has been set as the new error handler (set_error_handler). This function is useful when you need to generate a particular response to an exception at runtime. &reftitle.parameters; message The designated error message for this error. It's limited to 1024 bytes in length. Any additional characters beyond 1024 bytes will be truncated. error_level The designated error type for this error. It only works with the E_USER family of constants, and will default to E_USER_NOTICE. &reftitle.returnvalues; This function returns &false; if wrong error_level is specified, &true; otherwise. &reftitle.examples; See set_error_handler for a more extensive example. ]]> &reftitle.notes; HTML entities in message are not escaped. Use htmlentities on the message if the error is to be displayed in a browser. &reftitle.seealso; error_reporting set_error_handler restore_error_handler The error level constants