there are many "->" printed as "-",
e.g. page 138, the code
$objStatement = $objPDO-query($strQuery);
should be
$objStatement = $objPDO->query($strQuery);

Yes, i confirm, same problem.. and is not the only one, vary things in the book are confused.. specially in chp 10 for the SOAP and REST connection with AWS, is not simple like the book explained.. for real obtain a valid AWSAccessKey there are many and many steps to follow, instead in the book is explained in two rows..

e.g. page 10
print "Hello" . $this-<getName() . "!"
should be
print "Hello" . $this-<getName() . "!";