200-550 Exam Dumps : Zend Certified PHP Engineer

What is the output of the following code?

var_dump(boolval([]));

Which string will be returned by the following function call?

$test = '/etc/conf.d/wireless';

substr($test, strrpos($test, '/')); // note that strrpos() is being called, and not strpos()

In a shared hosting environment, session data can be read by PHP scripts written by any user. How can you prevent this? (Choose 2)