11. What is the return type of session_set_save_handler() function?

1. 1. float

   
   
   

   2. character

   
   
   

   3. boolean

   
   
   

   4. integer

   
   
   

   5. None of these

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   Returns TRUE on success or FALSE on failure.

---

12. Which function is used to erase all session variables stored in the current session?

1. 1. session_remove()

   
   
   

   2. session_destroy()

   
   
   

   3. session_unset()

   
   
   

   4. session_change()

   
   
   

   5. None of these

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   This will not completely remove the session from the storage mechanism. If you want to completely destroy the session, you need to use the function session_destroy().

---

---

13. What will the function session_id() return is no parameter is passed?

1. 1. Error

   
   
   

   2. Last Session Identification Number

   
   
   

   3. Previous Session Identification Number

   
   
   

   4. Current Session Identification Number

   
   
   

   5. None of these

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   Previous Session Identification Number

---

14. Which one of the following statements should you use to set the session username to Manjesh?

1. 1. session_start(“Manjesh”);

   
   
   

   2. $SESSION_START[“username”] = “Manjesh”;

   
   
   

   3. $SESSION[‘username’] = “Manjesh”;

   
   
   

   4. $_SESSION[‘username’] = “Manjesh”;

   
   
   

   5. None of these

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   You need to refer the session variable ‘username’ in the context of the $_SESSION superglobal.

---

---

15. What will be the output of the following PHP code? Say your previous session username was Manjesh.
    

    unset($_SESSION['username']);
    printf("Username now set to: %s", $_SESSION['username']);
    

1. 1. Username now set to: System

   
   
   

   2. Username now set to: Manjesh

   
   
   

   3. Error

   
   
   

   4. Username now set to:

   
   
   

   5. None of these

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   To delete the session variable ‘username’ we use the unset() function.

---