(PHP 4 >= 4.0.1, PHP 5)
trigger_error — Generates a user-level error/warning/notice message
$error_msg
[, int $error_type = E_USER_NOTICE
] )Used to trigger a user error condition, it can be used by in conjunction with the built-in error handler, or with a user defined function that has been set as the new error handler ( set_error_handler()).
This function is useful when you need to generate a particular response to an exception at runtime.
error_msg
The designated error message for this error. It's limited to 1024 characters in length. Any additional characters beyond 1024 will be truncated.
error_type
The designated error type for this error. It only works with the E_USER
family of constants, and will default to E_USER_NOTICE.
This function returns FALSE if wrong error_type is
specified, TRUE otherwise.
Example #1 trigger_error() example
See set_error_handler() for a more extensive example.
<?php
if ($divisor == 0) {
trigger_error("Cannot divide by zero", E_USER_ERROR);
}
?>
HTML entities in error_msg are not
escaped. Use htmlentities() on the message if
the error is to be displayed in a browser.