R4RIN – MCQs, Mock Tests | PHP PHP Mcq Arrays

PHP’s numerically indexed array begin with position ___________

1. 1
2. 2
3. 0
4. -1

✅ Correct Answer: 3

Which of the following are correct ways of creating an array? i) state[0] = "karnataka"; ii) $state[] = array("karnataka"); iii) $state[0] = "karnataka"; iv) $state = array("karnataka");

1. iii) and iv)
2. ii) and iii)
3. Only i)
4. ii), iii) and iv)

✅ Correct Answer: 1

Which of the following PHP function will return true if a variable is an array or false if it is not an array?

1. this_array()
2. is_array()
3. do_array()
4. in_array()

✅ Correct Answer: 2

Which in-built function will add a value to the end of an array?

1. array_unshift()
2. into_array()
3. inend_array()
4. array_push()

✅ Correct Answer: 4

What will be the output of the following PHP code? <?php $state = array ("Karnataka", "Goa", "Tamil Nadu", "Andhra Pradesh"); echo (array_search ("Tamil Nadu", $state) ); ?>

1. True
2. 1
3. False
4. 2

✅ Correct Answer: 4

What will be the output of the following PHP code? <?php $fruits = array ("apple", "orange", "banana"); echo (next($fruits)); echo (next($fruits)); ?>

1. orangebanana
2. appleorange
3. orangeorange
4. appleapple

✅ Correct Answer: 1

Which of the following function is used to get the value of the previous element in an array?

1. last()
2. before()
3. prev()
4. previous()

✅ Correct Answer: 3

What will be the output of the following PHP code? <?php $fruits = array ("apple", "orange", array ("pear", "mango"), "banana"); echo (count($fruits, 1)); ?>

1. 3
2. 4
3. 5
4. 6

✅ Correct Answer: 4

Which function returns an array consisting of associative key/value pairs?

1. count()
2. array_count()
3. array_count_values()
4. count_values()

✅ Correct Answer: 3

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

1. I like Volvo, Toyota and BMW
2. I like Volvo, BMW and Toyota
3. I like BMW, Volvo and Toyota
4. I like Toyota, BMW and Volvo

✅ Correct Answer: 4

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

1. Array (Peter Ben Joe)
2. Array ([Peter] => 35 [Ben] => 37 [Joe] => 43)
3. Array (35 37 43)
4. Array ([35] => Peter [37] => Ben [43] => Joe)

✅ Correct Answer: 4

What will be the output of the following PHP code? <?php $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)); ?>

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

✅ Correct Answer: 4

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

1. Array ( [d] => yellow )
2. Array ( [i] => orange )
3. Array ( [h] => orange )
4. Array ( [d] => yellow [h] => orange )

✅ Correct Answer: 1

What will be the output of the following PHP code? <?php $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); ?>

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

✅ Correct Answer: 4

What will be the output of the following PHP code? <?php $a = array("a" => "india", "b" => "brazil", "c" => "china"); echo array_shift($a); echo "<br>"; array_pop($a); print_r($a); ?>

1. india Array ( [b] => Brazil )
2. india Array ( [a] => brazil )
3. china Array ( [a] => india )
4. china Array ( [a] => brazil )

✅ Correct Answer: 1

What will be the output of the following PHP code? <?php $a1 = array_fill(1, 4, "hello"); $b1 = array_fill(5, 1, "php"); $a2 = array_merge($a1, $a2); print_r($a2); echo "<br>"; print_r($b1); ?>

1. Array ( [1] => hello [4] => hello [5] => php ) Array ( [5] => php )
2. Array ( [1] => hello [2] => hello [3] => hello [4] => hello ) Array ( [5] => php )
3. Array ( [1] => hello [2] => hello [3] => hello [4] => hello [5] => php ) Array ( [5] => php )
4. Array ( [1] => hello [2] => hello [3] => hello [4] => hello ) Array ( [1] => php )

✅ Correct Answer: 3

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

1. Sam is the brother of Bob and Jack
2. Samis the brother of Bob and Bob
3. Sam is the brother of Jack and Bob
4. Error

✅ Correct Answer: 2

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

1. Sam is the brother of Bob and Bob) $brother
2. Sam is the brother of Bob and Bob)
3. $brother
4. Error

✅ Correct Answer: 4

By default, the index of array in php starts from ______?

1. 0
2. 1
3. -1
4. 2

✅ Correct Answer: 1

A ________ is an array with more than two dimensions.

1. A. single dimensional array
2. multi dimensional array
3. Both A and B
4. None of the above

✅ Correct Answer: 2

Which of the following are correct ways of creating an array? i) arr[0] = "letsfindcourse"; ii) $arr[] = array("letsfindcourse"); iii) $arr[0] = "letsfindcourse"; iv) $arr = array("letsfindcourse");

1. ii), iii) and iv)
2. ii) and iii)
3. Only i) D
4. iii) and iv)

✅ Correct Answer: 4

Which in-built function will add a value to the end of an array?

1. array_unshift()
2. into_array()
3. inend_array()
4. array_push()

✅ Correct Answer: 4

Which function returns an array consisting of associative key/value pairs?

1. count()
2. array_count()
3. array_count_values()
4. count_values()

✅ Correct Answer: 3

What will be the output of the following PHP code? <?php $arr = array ("lets", "find", "course", ".Com"); echo (array_search (".com", $arr) ); ?>

1. 0
2. Garbage value
3. 3
4. No Output

✅ Correct Answer: 4

As compared to associative arrays vector arrays are much

1. Faster
2. Slower
3. Stable
4. None of the above

✅ Correct Answer: 1

What is the output of the following php code? <?php $alphabet = array ("A", "B", "C"); echo (next($alphabet)); ?>

1. A
2. B
3. C
4. Error

✅ Correct Answer: 2

What is the output of the following php code? <?php $alphabet = array("A" => array ( "php" => "php 7.0", "date" => "3 December 2019"), "B" => array( "python" => "python 3.8.2", "date" => "24 December 2019") ); echo $alphabet ["A"]["date"]; ?>

1. php 7.0
2. 3 December 2019
3. python 3.8.2
4. 24 December 2019

✅ Correct Answer: 2

Key/value pair can be initialized using = operator?

1. True
2. False
3. Depend on program
4. Keys does not exist in array

✅ Correct Answer: 1

What is the use of is_array() function?

1. Function is used to print the array in readable format.
2. Adds elements to the beginning of the array and returns the size of array.
3. Function can be used to verify if a variable is an array. Returns TRUE or FALSE
4. Adds elements to the end of the array and returns the size of array.

✅ Correct Answer: 3

What is the use of array_unshift() function?

1. Function is used to print the array in readable format.
2. Adds elements to the beginning of the array and returns the size of array
3. Function can be used to verify if a variable is an array. Returns TRUE or FALSE
4. Adds elements to the end of the array and returns the size of array.

✅ Correct Answer: 2

What is the use of array_flip() function?

1. Rearranges the array elements in the reverse order
2. Is used to convert the keys to values and values to keys.
3. Can be used to fetch the keys present in the array
4. Returns number of elements in the array

✅ Correct Answer: 2

What is the use of array_values() function?

1. Returns all the values of the respective keys present in the passed array
2. Returns number of elements in the array
3. Can be used to fetch the keys present in the array
4. Returns the values and the frequency of each value in form of an array.

✅ Correct Answer: 4

Predict the output of the following code. <?php $a=array(1,2,3,5,6); next($a); next($a); next($a); echo current($a); ?>

1. 2
2. 3
3. 4
4. 5

✅ Correct Answer: 4

Predict the output of the following PHP code. <?php $fruits = array ("apple", "orange", "banana", "guava", "pine-apple", "papaya", "melon"); next($fruits); next($fruits); prev($fruits); ?>

1. guava
2. banana
3. orange
4. pine-apple

✅ Correct Answer: 3

Which of the following function is used to get the value of the previous element in an array?

1. last()
2. before()
3. prev()
4. previous()

✅ Correct Answer: 3

Which of the following function is Used to set the array pointer to the value of last key?

1. last()
2. end()
3. next()
4. final()

✅ Correct Answer: 2

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

1. I like Volvo BMW and Toyota.
2. I like Volvo, BMW and Toyota)
3. I like Volvo, BMW and Toyota
4. I like. Volvo.,. BMW. and. Toyota)

✅ Correct Answer: 2

What will be the output of the following PHP code? <?php $age = array("Peter"=>"35", "Ben"=>"37", "Joe"=>"43"); print_r(array_change_key_case($age, CASE_UPPER)); ?>

1. a) Array ( [Peter] => 35 [Ben] => 37 [Joe] => 43 )
2. Array ( [peter] => 35 [ben] => 37 [joe] => 43 )
3. Array ( [PETER] => 35 [BEN] => 37 [JOE] => 43 )
4. Array ( [PeTeR] => 35 [BeN] => 37 [Joe] => 43 )

✅ Correct Answer: 3

What will be the output of the following PHP code? <?php $cars = array("Volvo", "BMW", "Toyota", "Honda", "Mercedes", "Opel"); print_r(array_chunk($cars, 2)); ?>

1. Array ( [0] => Array ( [1] => Volvo [2] => BMW ) [1] => Array ( [1] => Toyota [2] => Honda ) [2] => Array ( [1] => Mercedes [2] => Opel ) )
2. Array ( [1] => Array ( [1] => Volvo [2] => BMW ) [2] => Array ( [1] => Toyota [2] => Honda ) [3] => Array ( [1] => Mercedes [2] => Opel ) )
3. Array ( [0] => Array ( [0] => Volvo [1] => Volvo ) [1] => Array ( [0] => BMW [1] => BMW ) [2] => Array ( [0] => Toyota [1] => Toyota ) )
4. Array ( [0] => Array ( [0] => Volvo [1] => BMW ) [1] => Array ( [0] => Toyota [1] => Honda ) [2] => Array ( [0] => Mercedes [1] => Opel ) )

✅ Correct Answer: 4

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

1. Array ( Peter Ben Joe )
2. Array ( [Peter] => 35 [Ben] => 37 [Joe] => 43 )
3. Array ( 35 37 43 )
4. Array ( “[Peter] => 35” “[Ben] => 37” “[Joe] => 43” )

✅ Correct Answer: 2

What will be the output of the following PHP code? <?php $a = array("A", "Cat", "Dog", "A", "Dog"); print_r(array_count_values($a)); ?>

1. Array ( [A] => 2 [Cat] => 1 [Dog] => 2 )
2. Array ( [A] => 2 [Cat] => 2 [Dog] => 1 )
3. Array ( [A] => 1 [Cat] => 1 [Dog] => 2 )
4. Array ( [A] => 2 [Cat] => 1 [Dog] => 1)

✅ Correct Answer: 1

What will be the output of the following PHP code? <?php $a1 = array_fill(3, 4, "blue"); $b1 = array_fill(0, 1, "red"); print_r($a1); echo "<br>"; print_r($b1); ?>

1. Array ( [3] => blue [4] => blue) Array ( [0] => red )
2. Array ( [4] => blue [5] => blue [6] => blue) Array ( [0] => red )
3. Array ( [3] => blue [4] => blue [5] => blue [6] => blue ) Array ()
4. Array ( [3] => blue [4] => blue [5] => blue [6] => blue ) Array ( [0] => red )

✅ Correct Answer: 4

What will be the output of the following PHP code? <?php $a1 = array("red", "green"); $a2 = array("blue", "yellow"); print_r(array_merge($a1, $a2)); ?>

1. Array ( [0] => red [1] => green)
2. Array ( [0] => blue [1] => yellow [2] => red [3] => green )
3. Array ( [0] => red [1] => green [2] => blue [3] => yellow )
4. Array ( [0] => blue [1] => yellow )

✅ Correct Answer: 3

What will be the output of the following PHP code? <?php $a = array("a"=>"red", "b"=>"green", "c"=>"blue"); echo array_shift($a); print_r ($a); ?>

1. green
2. red
3. redArray( [c] => green [c] => blue )
4. redArray( [b] => green [c] => blue )

✅ Correct Answer: 4

What will be the output of the following PHP code? <?php $a = array("red", "green", "blue"); array_pop($a); print_r($a); ?>

1. Array ( [0] => red [1] => green )
2. Array ( [0] => green [1] => blue )
3. Array ( [0] => red [1] => blue )
4. Array ( [0] => blue [1] => blue )

✅ Correct Answer: 1

What will be the output of the following PHP code? <?php $fruits = array ("mango", "apple", "pear", "peach"); $fruits = array_flip($fruits); echo ($fruits[0]); ?>

1. mango
2. error
3. peach
4. 0

✅ Correct Answer: 2

Which of the functions is used to sort an array in descending order?

1. sort()
2. asort()
3. rsort()
4. dsort()

✅ Correct Answer: 3

What will be the output of the following PHP code? <?php $arr = array ("picture1.JPG", "picture2.jpg", "Picture10.jpg", "picture20.jpg"); sort($arr); print_r($arr); ?>

1. Array ( [0] => picture1.JPG [1] => Picture10.jpg [2] => picture2.jpg [3] => picture20.jpg )
2. Array ( [0] => picture1.JPG [1] => picture2.jpg [2] => Picture10.jpg [3] => picture20.jpg )
3. Array ( [0] => Picture10.jpg [1] => picture1.JPG [2] => picture2.jpg [3] => picture20.jpg )
4. Array ( [0] => Picture10.jpg [1] => picture1.JPG [2] => picture20.jpg [3] => picture2.jpg )

✅ Correct Answer: 3

Which function should we use to sort the array in natural order?

1. dsort()
2. casesort()
3. natcasesort()
4. naturalsort()

✅ Correct Answer: 3

What will be the output of the following PHP code? <?php $face = array ("A", "J", "Q", "K"); $number = array ("2","3","4", "5", "6", "7", "8", "9", "10"); $cards = array_merge ($face, $number); print_r ($cards); ?>

1. Array ( [0] => A [1] => J [2] => Q [3] => K [4] => 2 [5] => 3 [6] => 4 [7] => 5 [8] => 6 [9] => 7 [10] => 8 [11] => 9 [12] => 10 )
2. Array ( [0] => A [1] => 2 [2] => J [3] => 3 [4] => Q [5] => 4 [6] => K [7] => 5 [8] => 6 [9] => 7 [10] => 8 [11] => 9 [12] => 10 )
3. Error
4. Array ( [0] => 2 [1] => 3 [2] => 4 [3] => 5 [4] => 6 [5] => 7 [6] => 8 [7] => 9 [8] => 10 [9] => A [10] => J [11] => Q [12] => K )

✅ Correct Answer: 1

What will be the output of the following PHP code? <?php $fruits = array ("apple", "mango", "peach", "pear", "orange"); $subset = array_slice ($fruits, 2); print_r ($subset); ?>

1. Array ( [0] => peach )
2. Array ( [0] => apple [1] => mango [2] => peach )
3. Array ( [0] => apple [1] => mango )
4. Array ( [0] => peach [1] => pear [2] => orange )

✅ Correct Answer: 4

What will be the output of the following PHP code? <?php $fruits = array ("apple", "mango", "peach", "pear", "orange"); $subset = array_splice ($fruits, 2); print_r ($fruits); ?>

1. Error
2. Array ( [0] => apple [1] => mango [2] => peach )
3. Array ( [0] => apple [1] => mango ) d)
4. Array ( [0] => pear [1] => orange

✅ Correct Answer: 3

What will be the output of the following PHP code? <?php $number = array ("4", "hello", 2); echo (array_sum ($number)); ?>

1. 4hello2
2. 4
3. 2
4. 6

✅ Correct Answer: 4

What will be the output of the following PHP code? <?php $array1 = array ("KA", "LA", "CA", "MA", "TA"); $array2 = array ("KA", "IA", "CA", "GA", "TA"); $inter = array_intersect ($array1, $array2); print_r ($inter); ?>

1. Array ( [0] => KA [1] => LA [2] => CA [3] => MA [4] => TA [5] => IA [6] => GA )
2. Array ( [0] => KA [2] => CA [4] => TA )
3. Array ( [1] => IA [3] => GA )
4. Array ( [1] => LA [3] => MA )

✅ Correct Answer: 2