Lucky IT House Senior Web Developer Interview Questions and Answers

My current CTC is $80,000 and my expected CTC is $90,000.

• Current CTC: $80,000

• Expected CTC: $90,000

PHP is a server-side scripting language used for web development. It is case-sensitive due to its origins in C programming.

• PHP stands for Hypertext Preprocessor and is commonly used for creating dynamic web pages.

• PHP is case-sensitive, meaning variables, functions, and classes must be referenced with the exact casing.

• This case-sensitivity is inherited from its roots in the C programming language.

• For example, $variable ...read more

Variables can be changed during program execution, while constants remain constant.

• Variables can be reassigned with different values, while constants have a fixed value.

• Variables are declared using 'var', 'let', or 'const' keywords, while constants are declared using 'const' keyword.

• Constants are typically used for values that should not change throughout the program, like mathematical constants or configuration settin...read more

Dynamic websites have content that can change based on user input or interactions, while static websites display the same content to all users.

• Dynamic websites use server-side scripting languages like PHP, ASP, or JSP to generate content on the fly.

• Static websites are built using HTML and CSS and the content remains the same for all users.

• Examples of dynamic websites include social media platforms like Facebook or e-co...read more

Variables can hold different types of data, including numbers, strings, booleans, and more, each serving unique purposes.

• 1. String: Represents text, e.g., 'Hello, World!'

• 2. Number: Represents numeric values, e.g., 42 or 3.14.

• 3. Boolean: Represents true/false values, e.g., true or false.

• 4. Array: A collection of values, e.g., [1, 2, 3] or ['apple', 'banana'].

• 5. Object: A collection of key-value pairs, e.g., {name: 'John...read more

Oops concepts refer to Object-Oriented Programming concepts which include inheritance, encapsulation, polymorphism, and abstraction.

• Inheritance allows a class to inherit properties and behavior from another class.

• Encapsulation involves bundling data and methods that operate on the data into a single unit.

• Polymorphism allows objects to be treated as instances of their parent class.

• Abstraction involves hiding the complex...read more

Polymorphism is the ability of a function or method to behave differently based on the object it is acting upon.

• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• It enables a single interface to represent a group of related interfaces.

• Examples include method overloading and method overriding in object-oriented programming.

Inheritance is a concept in object-oriented programming where a class inherits properties and behaviors from another class.

• Inheritance allows for code reusability and promotes a hierarchical relationship between classes.

• Types of inheritance include single inheritance (one class inherits from one parent class), multiple inheritance (one class inherits from multiple parent classes), and multilevel inheritance (one class ...read more