THE WORLD'S LARGEST WEB DEVELOPER SITE

PHP Tutorial

PHP HOME PHP Intro PHP Install PHP Syntax PHP Comments PHP Variables PHP Echo / Print PHP Data Types PHP Strings PHP Numbers PHP Constants PHP Operators PHP If...Else...Elseif PHP Switch PHP While Loops PHP For Loops PHP Functions PHP Arrays PHP Sorting Arrays PHP Superglobals

PHP Forms

PHP Form Handling PHP Form Validation PHP Form Required PHP Form URL/E-mail PHP Form Complete

PHP Advanced

PHP Arrays Multi PHP Date and Time PHP Include PHP File Handling PHP File Open/Read PHP File Create/Write PHP File Upload PHP Cookies PHP Sessions PHP Filters PHP Filters Advanced

MySQL Database

MySQL Database MySQL Connect MySQL Create DB MySQL Create Table MySQL Insert Data MySQL Get Last ID MySQL Insert Multiple MySQL Prepared MySQL Select Data MySQL Delete Data MySQL Update Data MySQL Limit Data

PHP XML

PHP XML Parsers PHP SimpleXML Parser PHP SimpleXML - Get PHP XML Expat PHP XML DOM

PHP - AJAX

AJAX Intro AJAX PHP AJAX Database AJAX XML AJAX Live Search AJAX Poll

PHP Examples

PHP Examples PHP Quiz PHP Exercises PHP Certificate

PHP Reference

PHP Overview PHP Array PHP Calendar PHP Date PHP Directory PHP Error PHP Filesystem PHP Filter PHP FTP PHP Libxml PHP Mail PHP Math PHP Misc PHP MySQLi PHP Network PHP SimpleXML PHP Stream PHP String PHP XML Parser PHP Zip PHP Timezones

PHP trigger_error() Function

PHP Error Reference

Example

If $usernum > 10, trigger an error:

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

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.


Syntax

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)


Technical Details

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

PHP Error Reference