78 + Mcqs in Arrays and Functions in PHP Page 1 McqOptions

1.	All these pow ( ), exp ( ), log ( ), log10 ( ) functions are example of
A.	Trigonometry function
B.	Exponential function
C.	Base conversion function
D.	None of them
Answer» C. Base conversion function

Discussion

2.	Side effect of array_pop ( ) function is
A.	It removes the first element of an array
B.	It removes last element of an array
C.	It modifies an array from middle
D.	All of them
Answer» C. It modifies an array from middle

Discussion

3.	Array_values ( ) function returns an array containing
A.	New values of array
B.	All the values of array
C.	0 and 1 values of array
D.	None of them
Answer» C. 0 and 1 values of array

Discussion

4.	Arsort ( ) function same as asort ( ) but
A.	It sorts values in descending order
B.	It sorts values in ascending order
C.	It start sorting values from middle
D.	None of them
Answer» B. It sorts values in ascending order

Discussion

5.	Which mathematical constant notation is used for square root?
A.	sqr ( )
B.	sqrt (2)
C.	1/sqrt ( )
D.	None of them
Answer» C. 1/sqrt ( )

Discussion

6.	Popping is an act of
A.	Adding values
B.	Taking off values from stack
C.	Transferring values from stack
D.	None of them
Answer» C. Transferring values from stack

Discussion

7.	Foreach ( ), current ( ), next ( ), reset ( ), each ( ) and array_walk ( ) all these functions are example of
A.	Searching arrays
B.	Creating arrays
C.	Iteration of arrays
D.	Deleting of arrays
Answer» D. Deleting of arrays

Discussion

8.	Default numbering for an array indices starts from
A.	0
B.	1
C.	2
D.	3
Answer» B. 1

Discussion

9.	Unlike vector arrays of C and C++ PHP arrays can store
A.	Same type of data
B.	Varied types of data
C.	Small amount of data
D.	All of them
Answer» C. Small amount of data

Discussion

10.	For getting rid of an assigned variable in an array which function is used?
A.	delete_array ( )
B.	reset_array
C.	reset ( )
D.	unset ( )
Answer» E.

Discussion

11.	Internal linked keys in an array can be retrievable by
A.	pointer ( ) function
B.	each ( ) function
C.	key ( ) function
D.	None of them
Answer» D. None of them

Discussion

12.	In vector arrays, the elements must have
A.	Same size
B.	Same type
C.	Different size
D.	Different type
Answer» C. Different size

Discussion

13.	Is_array ( ) function that takes a single argument of any type and returns a true value if
A.	Argument is character type
B.	Argument is number type
C.	Argument is an array
D.	none of them
Answer» D. none of them

Discussion

14.	When we simply want iteration through looping an array values we can use
A.	current ( )
B.	foreach ( )
C.	next ( )
D.	None of them
Answer» C. next ( )

Discussion

15.	Current ( ) function is a
A.	2 array argument
B.	3 array argument
C.	1 array argument
D.	None of them
Answer» D. None of them

Discussion

16.	Which of the following are valid function names?i) function()ii) €()iii) .function()iv) $function()
A.	Only ii)
B.	None of the mentioned.
C.	All of the mentioned.
D.	iii) and iv)
Answer» B. None of the mentioned.

Discussion

17.	What will happen in this function call?
A.	Call By Value
B.	Call By Reference
C.	Default Argument Value
D.	Type Hinting
Answer» B. Call By Reference

Discussion

18.	Count ( ) function is identical to
A.	is_array ( ) function
B.	in_array ( ) function
C.	sizeof ( )
D.	isset ( ) function
Answer» D. isset ( ) function

Discussion

19.	Indices of arrays can be either strings or numbers and they are denoted as
A.	$my_array {4}
B.	$my_array [4]
C.	$my_array\| 4 \|
D.	None of them
Answer» C. $my_array\| 4 \|

Discussion

20.	Other than index values an array can be retrieved by a function that is called as
A.	Retrieve ( ) function
B.	Array_retrive ( ) function
C.	list ( ) function
D.	Array_call ( ) function
Answer» D. Array_call ( ) function

Discussion

21.	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”);
A.	iii) and iv)
B.	ii) and iii)
C.	Only i)
D.	ii), iii) and iv)
Answer» B. ii) and iii)

Discussion

22.	A function that returns keys of its input array in form of new array where keys are stored as values, is a
A.	return_function ( )
B.	keys ( ) function
C.	implode ( ) function
D.	array_keys ( ) function
Answer» E.

Discussion

23.	As compared to associative arrays vector arrays are much
A.	Faster
B.	Slower
C.	Stable
D.	None of them
Answer» B. Slower

Discussion

24.	A function in PHP which starts with __ (double underscore) is know as..
A.	Magic Function
B.	Inbuilt Function
C.	Default Function
D.	User Defined Function
Answer» B. Inbuilt Function

Discussion

25.	There are how many ways to create an array in PHP script
A.	1
B.	2
C.	3
D.	4
Answer» D. 4

Discussion

26.	Array_slice ( ) function starts accepting arguments from
A.	First argument
B.	Second argument
C.	Third argument
D.	Both b and c
Answer» E.

Discussion

27.	Arrays that can store their values in association with unique keys or indices are called
A.	Associative arrays
B.	Key based arrays
C.	indices based arrays
D.	All of them
Answer» B. Key based arrays

Discussion

28.	Another name for arbitrary-precision arithmetic numbers are
A.	Bignum arithmetic
B.	Multiple precision arithmetic
C.	Infinite-precision arithmetic
D.	All of them
Answer» E.

Discussion

29.	Next ( ) function returns value after the
A.	pointer is moved
B.	pointer is reversed
C.	array is empty
D.	None of them
Answer» B. pointer is reversed

Discussion

30.	Pi is a\an
A.	Trigonometry function
B.	Exponential function
C.	Base conversion function
D.	None of them
Answer» B. Exponential function

Discussion

31.	Base conversion functions takes
A.	1 argument
B.	2 arguments
C.	3 arguments
D.	None of them
Answer» B. 2 arguments

Discussion

32.	Pos ( ) function is an alias for
A.	array_walk ( ) function
B.	each ( ) function
C.	next ( ) function
D.	current ( ) function
Answer» E.

Discussion

33.	PHP arrays are also called as
A.	Vector arrays
B.	Perl arrays
C.	Hashes
D.	All of them
Answer» D. All of them

Discussion

34.	An array is a collection of
A.	Strings
B.	Characters
C.	Indexed variables
D.	Functions
Answer» D. Functions

Discussion

35.	Which function take two arguments and returns true if element contained as a value of an array?
A.	is_array ( ) function
B.	in_array ( ) function
C.	count ( ) function
D.	isset ( ) function
Answer» C. count ( ) function

Discussion

36.	Stacks work on principle of
A.	LIFO
B.	FIFO
C.	FILO
D.	None of them
Answer» B. FIFO

Discussion

37.	For purpose of iteration Foreach is a
A.	Function
B.	language construct
C.	loop
D.	Both a and b
Answer» C. loop

Discussion

38.	Which function takes two arguments, an array to be traversed and name of a function to apply to each key/value pair?
A.	array_walk ( ) function
B.	each ( ) function
C.	next ( ) function
D.	end ( ) function
Answer» B. each ( ) function

Discussion

39.	Base conversion function DecHex ( ) coverts from
A.	Base 10 to base 8
B.	Base 10 to base 16
C.	Base 16 to base 10
D.	Base 8 to base 10
Answer» C. Base 16 to base 10

Discussion

40.	Which one from following is an example of arbitrary precision function
A.	bcadd ( )
B.	atan ( )
C.	Tan ( )
D.	decoct ( )
Answer» B. atan ( )

Discussion

41.	PHP function calls are
A.	call-by-value
B.	call-by-location
C.	call-by-reference
D.	All of them
Answer» B. call-by-location

Discussion

42.	For converting base 8 to base 10, which function is used
A.	DecOct ( )
B.	OctBin ( )
C.	OctDec ( )
D.	HexOct ( )
Answer» D. HexOct ( )

Discussion

43.	To retrieve a value from an array we can use its
A.	Name
B.	Location
C.	Index
D.	None of them
Answer» D. None of them

Discussion

44.	Pointing before moving current pointer ahead is a behavior of
A.	next ( ) function
B.	prev ( ) function
C.	end ( ) function
D.	each ( ) function
Answer» E.

Discussion

45.	In multidimensional arrays rather than a single key they values are stored in
A.	Sequence of key values
B.	2 keys
C.	linear style
D.	None of them
Answer» B. 2 keys

Discussion

46.	Three ways to create an array is Direct assignment, array ( ) construct and
A.	Functions returning arrays
B.	Functions creating arrays
C.	Keys creating arrays
D.	None of them
Answer» B. Functions creating arrays

Discussion

47.	Act of adding values into a stack is called
A.	Popping
B.	Polling
C.	Pushing
D.	None
Answer» D. None

Discussion

48.	Mathematical constant M_PI defines a
A.	Pi
B.	log
C.	1/pi
D.	sqrt
Answer» B. log

Discussion

49.	For reversing an array which function is used?
A.	reverse ( ) function
B.	array_rev ( ) function
C.	array_reverse ( )
D.	change_array_order ( )
Answer» D. change_array_order ( )

Discussion

50.	Which function displays structured information about variables including its type and value?
A.	asort ( )
B.	ksort ( )
C.	sort ( )
D.	var_dump ( )
Answer» E.

Discussion

Explore topic-wise MCQs in Php.

All these pow ( ), exp ( ), log ( ), log10 ( ) functions are example of

Side effect of array_pop ( ) function is

Array_values ( ) function returns an array containing

Arsort ( ) function same as asort ( ) but

Which mathematical constant notation is used for square root?

Popping is an act of

Foreach ( ), current ( ), next ( ), reset ( ), each ( ) and array_walk ( ) all these functions are example of

Default numbering for an array indices starts from

Unlike vector arrays of C and C++ PHP arrays can store

For getting rid of an assigned variable in an array which function is used?

Internal linked keys in an array can be retrievable by

In vector arrays, the elements must have

Is_array ( ) function that takes a single argument of any type and returns a true value if

When we simply want iteration through looping an array values we can use

Current ( ) function is a

Which of the following are valid function names?i) function()ii) €()iii) .function()iv) $function()

What will happen in this function call?

Count ( ) function is identical to

Indices of arrays can be either strings or numbers and they are denoted as

Other than index values an array can be retrieved by a function that is called as

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”);

A function that returns keys of its input array in form of new array where keys are stored as values, is a

As compared to associative arrays vector arrays are much

A function in PHP which starts with __ (double underscore) is know as..

There are how many ways to create an array in PHP script

Array_slice ( ) function starts accepting arguments from

Arrays that can store their values in association with unique keys or indices are called

Another name for arbitrary-precision arithmetic numbers are

Next ( ) function returns value after the

Pi is a\an

Base conversion functions takes

Pos ( ) function is an alias for

PHP arrays are also called as

An array is a collection of

Which function take two arguments and returns true if element contained as a value of an array?

Stacks work on principle of

For purpose of iteration Foreach is a

Which function takes two arguments, an array to be traversed and name of a function to apply to each key/value pair?

Base conversion function DecHex ( ) coverts from

Which one from following is an example of arbitrary precision function

PHP function calls are

For converting base 8 to base 10, which function is used

To retrieve a value from an array we can use its

Pointing before moving current pointer ahead is a behavior of

In multidimensional arrays rather than a single key they values are stored in

Three ways to create an array is Direct assignment, array ( ) construct and

Act of adding values into a stack is called

Mathematical constant M_PI defines a

For reversing an array which function is used?

Which function displays structured information about variables including its type and value?