Questions and answers for exam Preparation

MCQs

Total Questions : 53 | Page 2 of 6 pages

Question 11. What will be the output of the following PHP code?$cars = array("Volvo", "BMW", "Toyota");echo "I like " . $cars[2] . ", " . $cars[1] . " and " . $cars[0] . ".";

I like Toyota, BMW and Volvo
I like BMW, Volvo and Toyota
I like Volvo, BMW and Toyota
I like Volvo, Toyota and BMW

Discuss Question

Answer: Option A. -> I like Toyota, BMW and Volvo

Question 12. What will be the output of the following PHP code?$a=array("A","Cat","Dog","A","Dog");$b=array("A","A","Cat","A","Tiger");$c=array_combine($a,$b);print_r(array_count_values($c));

Array ( [A] => 2 [Cat] => 1 [Dog] => 4 [Tiger] => 1 )
Array ( [A] => 2 [Cat] => 2 [Dog] => 1 [Tiger] => 1 )
Array ( [A] => 6 [Cat] => 1 [Dog] => 2 [Tiger] => 1 )
Array ( [A] => 5 [Cat] => 2 [Dog] => 2 [Tiger] => 1 )

Discuss Question

Answer: Option D. -> Array ( [A] => 5 [Cat] => 2 [Dog] => 2 [Tiger] => 1 )

Question 13. What will be the output of the following PHP code?$a1 = array("red", "green");$a2 = array("blue", "yellow");$a3 = array_merge($a1, $a2);$a4 = array("a", "b", "c", "d");$a = array_combine($a4, $a3);print_r($a);

Array ( [a] => red [b] => green [c] => blue [d] => yellow )
Array ( [0] => red [1] => green [2] => blue [3] => yellow )
Array ( [0] => blue [1] => yellow [2] => red [3] => green )
Array ( [a] => blue [b] => yellow [c] => red [d] => green )

Discuss Question

Answer: Option A. -> Array ( [a] => red [b] => green [c] => blue [d] => yellow )

Question 14. What will be the output of the following PHP code?$a1 = array("a" => "red", "b" => "green", "c" => "blue", "d" => "yellow");$a2 = array("e" => "red", "f" => "green", "g" => "blue", "h" => "orange");$a3 = array("i" => "orange");$a4 = array_combine($a2, $a3);$result = array_diff($a4, $a2);print_r($result);

Array ( [i] => orange )
Array ( [d] => yellow [h] => orange )
Array ( [d] => yellow )
Array ( [h] => orange )

Discuss Question

Answer: Option C. -> Array ( [d] => yellow )

Question 15. What will be the output of the following PHP code?$fname = array("Peter", "Ben", "Joe");$age = array("35", "37", "43");$c = array_combine($age, $fname);print_r($c);

Array ( [35] => Peter [37] => Ben [43] => Joe )
Array ( Peter Ben Joe )
Array ( [Peter] => 35 [Ben] => 37 [Joe] => 43 )
Array ( 35 37 43 )

Discuss Question

Answer: Option A. -> Array ( [35] => Peter [37] => Ben [43] => Joe )

Question 16. What will be the output of the following PHP code?$names = array("Sam", "Bob", "Jack");echo $names[0] . "is the brother of " . $names[1] . " and " . $names[1] . ".";

Sam is the brother of Bob and Jack
Error
Sam is the brother of Bob and Bob)
Sam is the brother of Jack and Bob)

Discuss Question

Answer: Option C. -> Sam is the brother of Bob and Bob)

Question 17. What will be the output of the following PHP code ?$age = array("Harry" => "21", "Ron" => "23","Malfoy" => "21");array_change_key_case($age, CASE_UPPER);array_pop($age);print_r($age);

Array ( [HARRY] => 21 [RON] => 23 [MALFOY] => 21 )
Array ( [Harry] => 21 [Ron] => 23 [Malfoy] => 21 )
Array ( [Harry] => 21 [Ron] => 23 )
Array ( [HARRY] => 21 [RON] => 23 )

Discuss Question

Answer: Option D. -> Array ( [HARRY] => 21 [RON] => 23 )

Question 18. What will be the output of the following PHP code?$place = array("NYC", "LA", "Paris");array_pop($place);$place1 = array("Paris");$place = array_merge($place, $place1);print_r($place);

Array ( [0] => NYC [1] => LA [2] => Paris)
Array ( [0] => LA [1] => Paris [2] => Paris )
Array ( [0] => NYC [1] => LA [2] => Paris [3] => Paris )
None of the mentioned

Discuss Question

Answer: Option B. -> Array ( [0] => LA [1] => Paris [2] => Paris )

Question 19. What will be the output of the following PHP code?$names = array("Sam", "Bob", "Jack");echo $names[0] . "is the brother of " . $names[1] . " and " . $names[1] . ".".$brother;

Error
Sam is the brother of Bob and Bob) $brother
Sam is the brother of Bob and Bob)
$brother

Discuss Question

Answer: Option A. -> Error

Question 20. What will be the output of the following PHP code ?$a1 = array("a" => "red", "b" => "green", "c" => "blue", "d" => "yellow");$result = array_flip($a1);print_r($result);