200-500 Exam Dumps : Zend PHP 5 Certification

Given the default PHP configuration, how can all of the parameters provided via GET be accessed in a form of a string?

Assume that you are using PHP s session management without cookies and want to make sure that session information does not get lost when redirecting the client to another URL. Which of the following functions do you need to achieve that? (Choose 3)

After performing the following operations:

$a = array('a', 'b', 'c');

$a = array_keys(array_flip($a));

What will be the value of $a?