1. What is the purpose of the switch statement in JavaScript? a) To declare variables conditionally b) To execute a block of code among many alternatives c) To loop through a block of code d) To check for boolean conditions Click to View Answer and Explanation Answer: b) To execute a block of code among […]
JavaScript Switch Statement MCQ Read More »
1. What is the basic syntax of an if statement in JavaScript? a) if (condition) {statements} b) if condition {statements} c) if {condition, statements} d) if [condition] {statements} Click to View Answer and Explanation Answer: a) if (condition) {statements} Explanation: The basic syntax of an if statement in JavaScript includes the if keyword, followed by
JavaScript if, else, and else if MCQ Read More »
1. What is the purpose of an array in JavaScript? a) To store multiple functions b) To organize code into reusable blocks c) To store multiple values in a single variable d) To execute a sequence of operations Click to View Answer and Explanation Answer: c) To store multiple values in a single variable Explanation:
JavaScript Arrays MCQ Read More »
1. What types of numbers does JavaScript support? a) Integers and floats as distinct types b) Only integers c) Only floats d) A single number type, which includes integers and floats Click to View Answer and Explanation Answer: d) A single number type, which includes integers and floats Explanation: JavaScript has only one type of
JavaScript Numbers MCQ Read More »
1. How are JavaScript objects typically defined? a) With the new keyword b) Using square brackets [] c) With an object literal d) Using round parentheses () Click to View Answer and Explanation Answer: c) With an object literal Explanation: JavaScript objects are commonly defined using an object literal, which is a list of name:value
JavaScript Objects MCQ Read More »
1. What is the primary purpose of a function in JavaScript? a) To iterate over arrays b) To execute a block of code when invoked c) To store data d) To create HTML content Click to View Answer and Explanation Answer: b) To execute a block of code when invoked Explanation: A JavaScript function is
JavaScript Functions MCQ Read More »
1. What are the basic data types in JavaScript? a) String, Number, Boolean, Object, Function b) String, Number, Boolean, Object, Undefined, Null c) String, Number, Bigint, Boolean, Undefined, Null, Symbol, Object d) String, Integer, Float, Boolean, Array Click to View Answer and Explanation Answer: c) String, Number, Bigint, Boolean, Undefined, Null, Symbol, Object Explanation: JavaScript
JavaScript Data Types MCQ Read More »
1. What symbol is used to denote a variable in PHP? a) $ b) @ c) # d) % Click to View Answer and Explanation Answer: a) $ Explanation: In PHP, a variable starts with the $ symbol, followed by the name of the variable. 2. Which of the following is a valid variable name
1. What is the primary purpose of PHP filters? a) To modify the output of PHP scripts b) To sanitize and validate data from external sources c) To filter the contents of a file d) To apply CSS filters in PHP Click to View Answer and Explanation Answer: b) To sanitize and validate data from
1. What is Exception Handling in PHP? a) Handling HTML exceptions b) A method to handle errors and exceptions in a program c) A syntax for declaring variables d) Handling database exceptions only Click to View Answer and Explanation Answer: b) A method to handle errors and exceptions in a program Explanation: Exception handling in
PHP Exception Handling MCQ Read More »
1. What keyword is used to declare a class in PHP? a) class b) Class c) declare d) new Click to View Answer and Explanation Answer: a) class Explanation: The 'class' keyword is used to declare a class in PHP. 2. How do you create an instance of a class in PHP? a) new ClassName()
1. How does PHP receive form data sent via the GET method? a) $_GET array b) $_POST array c) $_REQUEST array d) get_data() Click to View Answer and Explanation Answer: a) $_GET array Explanation: PHP receives data sent via the GET method through the global $_GET array. 2. What method should be used to send
PHP Form Handling MCQ Read More »
1. What function is used to perform a regular expression match in PHP? a) preg_match() b) reg_match() c) match_regex() d) regex() Click to View Answer and Explanation Answer: a) preg_match() Explanation: The preg_match() function is used for performing a regular expression match in PHP. 2. Which character is used as the delimiter in PHP regular
PHP Regular Expressions MCQ Read More »
1. How do you open a file in PHP? a) open('filename', 'mode') b) fopen('filename', 'mode') c) file_open('filename', 'mode') d) open_file('filename', 'mode') Click to View Answer and Explanation Answer: b) fopen('filename', 'mode') Explanation: The fopen() function is used to open a file in a specified mode in PHP. 2. Which mode in fopen() function is used
PHP File Handling MCQ Read More »
1. How do you declare a function in PHP? a) function myFunction() { … } b) declare myFunction() { … } c) create myFunction() { … } d) newFunction myFunction() { … } Click to View Answer and Explanation Answer: a) function myFunction() { … } Explanation: Functions in PHP are declared using the 'function'
1. Which of these is a loop structure in PHP? a) if b) while c) echo d) isset Click to View Answer and Explanation Answer: b) while Explanation: The while loop is a loop structure in PHP that executes a block of code as long as the specified condition is true. 2. What is the
1. What is the primary use of a switch statement in PHP? a) To perform different actions based on different conditions b) To loop through a block of code c) To declare variables d) To define functions Click to View Answer and Explanation Answer: a) To perform different actions based on different conditions Explanation: A
PHP switch Statement MCQ Read More »
1. What is the basic structure for an if statement in PHP? a) if (condition) { code to be executed; } b) if condition { code to be executed; } c) if (condition) execute code; d) if: condition { code to be executed; } Click to View Answer and Explanation Answer: a) if (condition) {
PHP if…else…elseif Statements MCQ Read More »
1. What does the '==' operator do in PHP? a) Assigns a value b) Compares two values for equality c) Adds two values d) Checks if one value is greater than the other Click to View Answer and Explanation Answer: b) Compares two values for equality Explanation: The '==' operator is used for comparing two
1. Which function is used to define a constant in PHP? a) set_constant() b) const() c) define() d) constant() Click to View Answer and Explanation Answer: c) define() Explanation: The define() function is used to define a constant in PHP. 2. Once a constant is defined in PHP, can its value be changed? a) Yes
1. Which function is used to calculate the absolute value of a number in PHP? a) abs() b) fabs() c) absolute() d) mod() Click to View Answer and Explanation Answer: a) abs() Explanation: The abs() function is used to calculate the absolute value of a number in PHP. 2. How do you generate a random
1. What is the largest integer value supported in 64-bit PHP? a) 2^31 – 1 b) 2^63 – 1 c) 9,223,372,036,854,775,807 d) 4,294,967,295 Click to View Answer and Explanation Answer: b) 2^63 – 1 Explanation: In a 64-bit version of PHP, the largest integer is 2^63 – 1. 2. How is a hexadecimal number specified
1. Which function is used to find the length of a string in PHP? a) strlen() b) strlength() c) length() d) len() Click to View Answer and Explanation Answer: a) strlen() Explanation: The strlen() function is used to find the length of a string in PHP. 2. How do you concatenate two strings in PHP?
1. Which of the following is a scalar data type in PHP? a) Array b) Object c) Boolean d) NULL Click to View Answer and Explanation Answer: c) Boolean Explanation: Boolean is a scalar data type in PHP, representing two possible values: true or false. 2. What data type is used for textual data in
PHP Data Types MCQ Read More »
1. Which of the following is used to output one or more strings in PHP? a) echo b) print c) Both a) and b) d) None of the above Click to View Answer and Explanation Answer: c) Both a) and b) Explanation: Both echo and print are used to output strings in PHP. 2. What
PHP echo and print Statements MCQ Read More »