Error Handling Functions
PHP Manual

trigger_error

Generates a user-level error/warning/notice message

Description

bool trigger_error ( string $error_msg [, int $error_type = E_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.

Parameters

error_msg

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_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.

Return Values

This function returns FALSE if wrong error_type is specified, TRUE otherwise.

Examples

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);
}
?>

Notes

Warning

HTML entities in error_msg are not escaped. Use htmlentities on the message if the error is to be displayed in a browser.

See Also