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PHP Basic

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PHP Comments

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PHP Data Types

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PHP Casting

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PHP Superglobals

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PHP Form

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PHP Advanced

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PHP OOP

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MySQL Database

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PHP XML

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PHP Reference

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Text lesson

trigger_error()

Example

If $usernum is greater than 10, generate an error.

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

Definition and Usage

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

It can be used with either the built-in error handler or a user-defined error handler set using the set_error_handler() function.

Syntax

trigger_error(message, type)

Parameter Values

Parameter

Description

message

Required. Specifies the error message for this error, with a maximum length of 1024 bytes.

type

Optional. Specifies the error type for this error. Possible values are:

E_USER_ERROR
E_USER_WARNING
E_USER_NOTICE (default)

Technical Details

Return Value:	Returns `FALSE` if an incorrect error type is specified, and `TRUE` if it is correct.
PHP Version:	4.0.1+