PHP Data Types MCQs

11. What is the data type of $TV in this Line 1?

<php

$tax=10.3;
$TV="10.3+$TV"; # Line 1

?>

A. Integer
B. String
C. Unknown
D. No Output

View Answer


12. What is the data type of $TV in the above code?

<php

$TV;
echo gettype($TV);

?>

A. Integer
B. String
C. Unknown
D. Null

View Answer


13. What will be the output of the following code?

<php

define('t',10.3);
$tax=t;
echo "t+$tax";


?>

A. 20.6
B. 10.3+10.3
C. t+10.3
D. t+$tax

View Answer


14.  What is the data type of $Cost?

<php

$tax="17.5"
$Fridge=Whirlpool;
settype($Fridge,"string");
$Cost=$tax+$Fridge;
echo gettype($Cost);

?>

A. String
B. Integer
C. Null
D. Float

View Answer


15. What will be the output of the following code?

<php

PCmodel="DellInspirion3542";
settype($PCmodel,"integer");
echo $PCmodel;

?>

A. 0
B. 3542
C. DellInspirion3542
D. Error

View Answer


16. Select the true statements. Once a constant is defined:

A. The value cannot be changed, but the variable can be unset
B. Neither the value can be changed nor variable can be unset
C. The value can be changed, but it cannot be unset
D. The value can be changed and variable can be unset

View Answer


17. What is gettype() function do?

A. gettype() function returns the type of the variable
B. gettype() function is used to set type to variable
C. gettype() function is used to change type to variable
D. None of the above

View Answer


18. Constants, like variables, can hold _________.

A. integer
B. string
C. Both A and B
D. None of the above

View Answer


19. Ord ( ) function is used convert a ______.

A. Integer type into a string
B. Integer type into an array
C. Float type into an array
D. Array type into a string

View Answer


20. Which data type in PHP offers special variables that hold the references of resources that are external to PHP?

A. Array
B. Resources
C. object
D. string

View Answer





Discussion


* You must be logged in to add comment.