Functions and Arrays in PHP Practice Test

12th Standard Computer Applications — Functions and Arrays in PHP: Online Practice Test

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A_________is a block of code that performs a specific task.

A.parameter B.function C.class D.label

Pre-defined functions are also called _________.

A.user-defined functions B.recursive functions C.built-in functions D.lambda functions

Which one of the following is the right way of defining a function in PHP?

A.function functionname() { // code to be executed } B.function() {} C.def myFunction(): D.None of the above

A user-defined function in PHP starts with the keyword _________.

A.function B.def C.defined D.funct

Which of the following is a correct way to call a function in PHP?

A.functionName(); B.call functionName; C.execute functionName; D.run functionName();

What is an array in PHP?

A.An array is a special data type. B.It can hold many values under a single variable name. C.An array element can be any type of data. D.All of the above

How many types of arrays are there in PHP?

A.2 B.3 C.4 D.5

What is the index of the first element in an indexed array in PHP?

A.0 B.1 C.2 D.3

What is the index of the third element in an indexed array in PHP with 5 elements?

A.2 B.3 C.4 D.5

Q10

How do you create an indexed array in PHP?

A.By enclosing a comma-separated list of values in square brackets B.By using the array() function C.By enclosing a comma-separated list of values in curly braces D.Both A and B

Q11

How do you access the elements of an indexed array in PHP?

A.By using the array index in square brackets B.By using the array key in square brackets C.By using the array index in curly braces D.By using the array key in curly braces

Q12

Which of the following is an advantage of using functions in PHP that allows programmers to test and debug individual blocks of code separately from the rest of the application?

A.Modularity B.Testing and debugging C.Code reuse D.Polymorphism

Q13

How does PHP handle case-sensitivity regarding user-defined function names?

A.User-defined function names are completely case-sensitive. B.Only the first letter of the function name is case-sensitive. C.User-defined function names are not case-sensitive. D.Only functions containing numbers are case-sensitive.

Q14

A user-defined function name in PHP must start with which of the following characters?

A.A dollar sign (\$) or a number B.A letter or an underscore C.A number or a special symbol D.A semicolon (;) or an asterisk (*)

Q15

In PHP terminology, what is the precise distinction between the terms "parameter" and "argument"?

A.Arguments are used in the function definition, while parameters are used in the function call. B.Parameters are used in the function definition, while arguments are used in the function call. C.Parameters must be strings, while arguments must be numeric values. D.Arguments are always optional, while parameters are always mandatory.

Q16

How does PHP differ from traditional programming languages regarding the data types stored within a single array?

A.Traditional languages allow any data types, whereas PHP restricts arrays to only one data type. B.PHP does not require all elements in an array to be of the same data type, unlike traditional languages. C.PHP arrays can only store integer types, while traditional languages support mixed types. D.Both PHP and traditional languages strictly forbid mixed data types in arrays.

Q17

Which of the following is another term used to describe the keys in a PHP associative array?

A.Indexes B.Parameters C.Labels D.Nodes

Q18

When declaring a PHP array name, which symbol must it begin with, followed by a letter or an underscore?

A.# B.& C.\$ D._

Q19

Which operator is used to separate keys from their corresponding values when defining an associative array in PHP?

A.-> B.=> C.= D.::

Q20

In a PHP multidimensional array, what do the first and second sets of square brackets specify respectively?

A.Column and Row B.Key and Value C.Row and Column D.Index and Label

Q21

Which of the following is another name for a PHP multidimensional array?

A.Indexed array B.Nested array C.Linear array D.Flat array

Q22

Consider the PHP array: \$student = array("name" => "Barath", "age" => 23);. What will be the output of echo \$student["age"];?

A.name B.Barath C.age D.23

Q23

Which of the following is a correct syntax to create an indexed array containing elements in PHP?

A.\$colors = { "red", "green", "blue" }; B.\$colors = array("red", "green", "blue"); C.\$colors = ( "red", "green", "blue" ); D.\$colors = "red" . "green" . "blue";

Q24

What is the key keyword used in PHP to initiate the declaration of a user-defined function?

A.def B.funct C.function D.define

Q25

Which of the following describes the modularity advantage of using functions in PHP?

A.It allows code to be executed faster on the browser side. B.It breaks down the code into smaller, manageable pieces that are easier to maintain. C.It encrypts the database connection string automatically. D.It converts PHP code directly into native machine code.

Q26

Consider the PHP nested array: $arr = array(array(1, 2, 3), array(4, 5, 6), array(7, 8, 9));. What is the value of $arr?

A.2 B.5 C.6 D.8

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This free online practice test covers Functions and Arrays in PHP from the 12th Standard Computer Applications (Samacheer Kalvi) syllabus. Choose the number of questions and an optional time limit, then answer and submit — everything is checked in your browser, with the correct answers and a worked explanation shown at the end. For the full solutions to every question in this set, see the solved MCQs page.

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