How many ways can a session data be stored? 

How many error levels are available in PHP?

How many POSIX-style regular expression functions does PHP offer?

  If $a = 12 what will be returned when ($a == 12) ? 5 : 1 is executed?
 

 How many functions does PHP offer for searching strings using POSIX style regular expression? 

Which of the following are examples of external data in web applications?

 Which of the following PHP functions accepts any number of parameters? 

Which PHP function can be used to get the current memory usage?

 What will be the output of the following PHP code? 

<?php

echo str_pad("Salad", 5)." is good.";

?>

Which PHP configuration setting causes the engine to disregard repeated error messages that occur within the same file and on the same line?