How to avoid undefined offset

Question

How can you easily avoid getting this error/notice:

Notice: Undefined offset: 1 in /var/www/page.php on line 149

... in this code:

Answer 1

You get an undefined offset when the thing you're trying to explode the string by ($value) doesn't actually have it in, I believe.

This question is very much similar to this: undefined offset when using php explode(), where there is a much further explanation which should fully solve your issue.

As for checking for the occurrence of '|' as to prevent the error, you can do:

$pos = strpos($value,'|');

if(!($pos === false)) {
     //$value does contain at least one |
}

Hope this helps.