My answer was the only answer that matched your question about =. Since it is not specifically referenced in the PHP manual, I decided to branch out in the research I was doing for you(!) and offered up the only documented usage I found.
Do your own research next time and you won't have to put up with potentially misleading results.
Oh - and sorry to hear about your inability to understand some information you found on google. Can't wait to see how you handle your first set of job specs.