By default, every database connection opened by a script is either explicitly closed by the user during run time or released ____________ at the end of the script. 

Which statement is not correct? $x = null;

Which would show an error in PHP?

Which expression will return true for below sample code? $a = true; $b = false;

Which keyword is used to inherit our subclass into a superclass?

Which statement is incorrect?

An example of a PHP string is:

Which is a characteristic of the PHP language?

How do you combine multiple arrays into one single PHP array?

CakePHP, Zend, and CodeIgniter are popular _________ used on many PHP servers.

Why is PHP more widely used than ASP?