While studying for the Zend PHP Exam I came across the following contradicting information:
From the Zend PHP 5.3 Study guide v1a – PDF available here.

The answer:

And information from the php Architect’s Zend PHP 5 Certification Study Guide by Davey Shafik
ISBN: 0-9738621-4-9 Page 128

Can someone tell me which one is true?
Thanks
From the php manual, please note the
unless.