catch notification of explode()

Question

I process input of users.

Input should have this format:

text. address: xyz

Now I tried to use:

$address = explode('address: ', $text)[1];

But this causes an error in case of user input doesn't match the needed format.

How do I prevent this (maybe including a check), so script won't trigger a notice?

Answer 1

First assign variable:

$address = explode("address: ", $text);

Then check if is set key 1:

if (isset($address[1]) {
    $address = $address[1];
}

Then you shouldn't have any notices because next time you'll to existing parameter in array.