Which function is useful for producing a Unix timestamp based on a given date and time?

 To check whether a file was uploaded, you look in the _______ superglobal array.
 

 Which one of the following is the right way to define a constant? 

 To make the ImageHandler class portable you should create a separate file for it called __________ 

 Which of the following is the right way to use the DateTime class? 

Which of the following would be a potential match for the Perl-based regular expression /fo{2,4}/ ?

i) fol
ii) fool
iii) fooool
iv) fooooool 

Neglecting to set which of the following cookie will result in the cookie’s domain being set to the host name of the server which generated it. 

 Which of the following directive determines the maximum amount of time that a PHP script will spend attempting to parse input before registering a fatal error?

What will be the output of the following PHP code? 

<?php

$var=257;

$options = array("options"=>array ("min_range"=>0, "max_range"=>256));

if (!filter_var($var, FILTER_VALIDATE_INT, $options))

echo("Integer is not valid");

else

echo("Integer is valid");

?>