php programming language MCQ : Arrays-Converting between arrays and variables Link4

php programming language MCQ : Arrays-Converting between arrays and variables Link4

Arrays MCQ

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Q.1. For getting rid of an assigned variable in an array which function is used?

A. delete_array ( )                                                              B. reset_array
C. reset ( )                                                       D. unset ( )

Q.2. 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

Q.3. A function that takes two integers as arguments and returns an array filled with all integers between them, is known as-------.

A. Range ( ) function B. Value ( ) function
C. Limit ( ) function
D. None of the above

Q.4. Next ( ) function returns value after the -----.

A. pointer is reversed
B. pointer is moved
C. array is empty
D. None of the above

Q.5. $multi_array [1] [2] [3] [4] = "I am working on PHP"; will create ------.

A. One dimensional array
B. 5 dimensional array
C. 4 dimensional array
D. None of the above

Q.6. In vector arrays, the elements must have -----------.

A. Same size
B. Same type
C. Different size
D. Different type

Q.7. 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

Q.8. 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 the above

Q.9. 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)); \\ ?>

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

Q.10. 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\_combine(\$a2, \$a3); \\ \$result = array\_diff(\$a4, \$a2); \\ print\_r(\$result); \\ ?>

A. Array ( [i] => orange )                                                                  B. Array ( [d] => yellow )
C. Array ( [h] => orange )                                                    D. Array ( [d] => yellow [h] => orange )