Which statement is used for printing content in PHP?

  The statement used to create a trigger is ______________ 

 Which one of the following function is used to start a session? 

 A function in PHP which starts with __ (double underscore) is known as __________

What is the very first task executed by a session-enabled page?

What is the output of following code?

 <?php

    $value = 'car';

    $result = filter_var($value, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE);

    ?>

Which of the following functions can be used to compare two strings?

 The attack which involves the insertion of malicious code into a page frequented by other users is known as _______________ 

 What is the output of the following code?

<?php
   function a()
   {
       function b()
       {
           echo 'I am b';
}
       echo 'I am a';
   }
   a();
   b();
   ?>

  In which authentication method does changing the username or password can be done only by entering the code and making the manual adjustment.