Question

I have a small issue with my script.

I’m getting Strict Standards: Only variables should be passed by reference in

if( $checkDNS && ($domain = end(explode('@',$email, 2))) )

Answer 1

From the PHP manual:

This array is passed by reference because it is modified by the function. This means you must pass it a real variable and not a function returning an array because only actual variables may be passed by reference.

So you must use a variable in the end function:

$domain = explode('@',$email, 2);
if( $checkDNS && ($domain = end($domain)) )