or $ _GET
are two special PHP
functions that are used to get variables from a user-filled form. While using these functions, a user may encounter an error
, stating that there is an undefined index
This error can be avoided with the help of PHP isset ()
Undefined index is a minor error and is, therefore, not usually notified by default. Still, this depends on the server's configuration. With the help of the error_reporting function
, the type of error reported can be changed.
Fix Undefined Index Error When Using PHP Variables
To avoid this error when using the $ _POST or $ _GET variables, simply test whether the table's fields were initialized with the function isset ()
Image: © Scanrail1 - Shutterstock.com
// Before using $_POST['value']
// Instructions if $_POST['value'] exist
Published by jak58
Latest update on November 22, 2017 at 05:52 PM by owilson.