PHP trigger_error() Function

If $usernum > 10, trigger an error:

<?php
if ($usernum>10) {
trigger_error("Number cannot be larger than 10");
}
?>

Definition and Usage

The trigger_error() function creates a user-level error message.

The trigger_error() function can be used with the built-in error handler, or with a user-defined function set by the set_error_handler() function.

trigger_error( message, type)

Parameter	Description
message	Required. Specifies the error message for this error. Max 1024 bytes in length
type	Optional. Specifies the error type for this error. Possible values: E_USER_ERROR E_USER_WARNING E_USER_NOTICE (this is default)

Return Value:	FALSE if wrong error type is specified, TRUE otherwise
PHP Version:	4.0.1+