Question

Which of the following functions, gets a separator string amd aa and returns an array of strings? 6. string Ca implode b explode c strpos d. strstr 7. In MySQL, it is possible to insert a zero or an emptystring into aclumm defmed asNT NULL Caint a. True b. False Which keyword is used to refer to the current imstamce of a dass? 8. 2ant a. me b. Sme c. Sthis d. PHP is not object oriented. 9. How do you delete a cookie in PHP? Select all that appity Baint a. unset(S_COOKIE["cookie_name b. deletecookiel(S_COOKIE["cookie_name' c. setcookie("cookie_name", "value", time-200 d. All of the above Rasints 10. Which of the following statements is NOT true? a. Superglobal variables have global visibility. b. Constants have global visibility. c. Local variables declared within functions retain their values between function cails d. Global variables declared with the global keyword are wisible inside functions as wel. 11. Consider this PHP code snippet $list array (* Ton' > 1, "Barb 2, ate => 302 Which statements are correct? Select all that apply a. Accessing the index 2 gives the value "Barb" b. Accessing the index 4 gives an Undefined Offset notice/eror. c. Accessing the index 'Kate' gives the value 3. d. The array definition is incorrect Rpoints)

Answer 1

6

Ans: explode

Explode function is used to split the given string into small array of strings

Where as implode is used to join the strings.

7

Ans:True

For some values in mySql we can use empty or null as input.

Even if we left due to forgetting, it automatically places Null in that input place.

8

Ans: php is not object oriented

Actually php is a procedural language.it does not contain any classes or objects. So, don't instantiate any objects here

9

Ans: setcookie("cookie name","value",time()-300);

Actually there is no any seperate delete function to delete cookies. We just set the already expired time in time field to remove cookies.

10

Ans:local variables declared within function s retain their values between function calls.

It is the false statement that the local variables declared inside a function is only accessible within that function but not outside.

11

Ans:accessing the index 'kate' returns the value 3.

Here the array is declaring here by using the names as their indeces. So, Tom ,Barb,karte are index names to call or get 1,2,3 respectively.