HappyLocate Relocation Services Interview Questions and Answers

Using $$ in a variable in PHP creates a variable variable.

• It creates a new variable with the name of the value of the original variable.

• The new variable will contain the value of the original variable.

• It can be useful in certain situations, but can also lead to confusion and errors.

The connection variable in PHP is used to establish a connection to a database.

• The connection variable is created using the mysqli_connect() function

• It takes four parameters: host, username, password, and database name

• The variable is used to execute queries and retrieve results from the database

• It can be closed using the mysqli_close() function

C libraries provide pre-written code for common tasks in C programming language.

• C libraries contain pre-written code for common tasks such as string manipulation, memory allocation, and input/output operations.

• They are included in C programs using the #include directive.

• Examples of C libraries include stdio.h, string.h, and math.h.

• C libraries can be used to simplify programming tasks and improve code efficiency.

• They are often open source and can be modified and shared by deve...read more

Yes, PHP follows OOPs concepts.

• PHP supports classes, objects, inheritance, and polymorphism.

• It also has access modifiers like public, private, and protected.

• PHP has magic methods like __construct(), __destruct(), __get(), and __set().

• PHP also supports interfaces and abstract classes.

MySql is a relational database management system that stores and retrieves data for web applications.

• MySql uses SQL (Structured Query Language) to manage and manipulate data.

• It stores data in tables with rows and columns.

• It supports transactions to ensure data consistency.

• It can be accessed and managed through various programming languages and tools.

• It can be optimized for performance through indexing and query optimization.

Apache server is a web server software that delivers web content to clients.

• Apache server listens to incoming requests on a specified port

• It processes the request and sends back the response

• It can handle multiple requests simultaneously using child processes or threads

• It uses configuration files to determine how to handle different types of requests

• It can also serve as a reverse proxy or load balancer

Jquery is a JavaScript library that simplifies HTML document traversing, event handling, and animation.

• Jquery is a lightweight library that simplifies JavaScript programming.

• It allows easy manipulation of HTML documents and event handling.

• Jquery uses CSS selectors to select elements and perform actions on them.

• It has a wide range of plugins available for various functionalities.

• Jquery is compatible with all major browsers and versions.

Rasmus Lerdorf invented PHP in 1994.

• PHP was originally created as a set of Common Gateway Interface (CGI) scripts by Rasmus Lerdorf in 1994.

• It was later developed by a group of developers led by Andi Gutmans and Zeev Suraski.

• PHP stands for Hypertext Preprocessor and is a server-side scripting language used for web development.

• PHP is open source and has a large community of developers contributing to its development.

• PHP is used by popular websites like Facebook, Wikipedia, and...read more