Question

How to turn off this error in wamp:

notice undefined offset

I’d like to turn of just this error, but not all errors.

Answer 1

There are two issues at work here. One is what errors PHP reports, and the second is whether or not it displays those errors on the page (as opposed to the apache error log). If you’d like to turn off just NOTICES:

<?php
error_reporting(E_ALL & ~E_NOTICE);
?>

If you’d like to report the notices to your error log but not display them to the user, do this:

<?php
ini_set('display_errors','off');
?>

Note that turning off display errors will stop displaying ALL errors to the end user, and you’ll need to look at the error log, usually located in /var/log/httpd/error_log to see any errors while testing.