PHP Reference

Quick Reference

The PHP trigger_error() function creates a user-level error message and can be used with the built-in error handler, or with a user-defined function.

<?php
$number = 1;
if ($usernum > 0) {
    trigger_error('The number cannot be greater than 0');
}
?>

Output

The number cannot be greater than 0

Syntax

trigger_error(message, type)

Parameters

ParameterDescription
messageSpecifies the error message for this error (maximum 1024 bytes in length) (required)
typeSpecifies the error type for this error

  • E_USER_ERROR

  • E_USER_WARNING

  • E_USER_NOTICE (default)


PHP Notes:

  • When using PHP, single or double quotation marks are acceptable and work identically to one another; choose whichever you prefer, and stay consistent
  • Arrays count starting from zero NOT one; so item 1 is position [0], item 2 is position [1], and item 3 is position [2] … and so on

We’d like to acknowledge that we learned a great deal of our coding from W3Schools and TutorialsPoint, borrowing heavily from their teaching process and excellent code examples. We highly recommend both sites to deepen your experience, and further your coding journey. We’re just hitting the basics here at 1SMARTchicken.