Which of the following is correct about NULL?

A form that contains the values that a user previously entered in the form is called a ____ form.

By default, the properties of a php class are ____________.

In php, a(n) e-mail message is sent using the ____ function.

In php, the escape character is the ____.

Instead of reading a large text file into php, you can use the ____ to iterate through a text file.

Which variable contains values of $_GET, $_POST, and $_COOKIE?

How do you inherit the methods from BaseClass in MyClass?

Right way to set a value on an object stdClass?

Which is a string operator?

Which function returns information on the PHP configuration you are using?