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2024

Let’s start with the basics of PHP

2023

How can you use PHP CodeSniffer and PHP Mess Detector to improve code quality?

Describe the various methods of debugging PHP code.

What are JSON Web Tokens, and how do you use them for authentication in PHP?

How do you log and monitor errors in PHP applications?

Describe the use of GraphQL in PHP applications.

How do you implement user authentication and authorization in PHP applications?

Explain the use of GD and Imagick extensions for image manipulation in PHP.

How can you perform web scraping using PHP?

Describe the characteristics of PHP microframeworks like Slim and Lumen.

How do you validate user input and sanitize data in PHP?

Explain the purpose of dependency injection containers and how to use them in PHP.

Describe how to set up CI/CD pipelines for PHP applications.

How can you containerize a PHP application using Docker?

How do you configure PHP to work with Apache, Nginx, or other web servers?

Describe the steps involved in deploying a PHP application to a server.

How can you profile PHP code to identify performance bottlenecks?

What are namespaces, and how do they prevent naming conflicts in PHP?

Describe the use of templating engines like Twig in PHP.

2023

How do you manage dependencies in PHP using Composer?

Explain SOAP and RESTful web services in PHP.

How can you implement multi-language support in PHP applications?

How do you add security headers to PHP responses to improve security?

Describe the use of Memcached and Redis in PHP caching.

What is caching, and how can you implement it in PHP applications?

Describe some common use cases for regular expressions in PHP.

How do you use regular expressions in PHP?

Explain the concept of WebSockets and how to implement them in PHP.

How can you work with JSON data in PHP?

How do you interact with RESTful APIs using PHP?

How can you pass arguments to a PHP script through the command line?

What is PHP CLI, and how can you execute PHP scripts from the command line?

How do you extend functionality in WordPress using plugins?

Describe popular PHP-based CMS like WordPress, Joomla, and Drupal.

How do you implement the Dependency Injection pattern in PHP?

Explain Singleton, Factory, and Observer design patterns in PHP.

What are some security best practices to follow in PHP?

How do you organize the file structure of a PHP project efficiently?

What are code smells, and how can you avoid them in PHP code?

Describe the importance of code readability and maintainability in PHP.

Explain the purpose of AJAX in PHP applications.

How can you integrate PHP with HTML, CSS, and JavaScript?

How do you handle authentication in a PHP API?

Describe the steps to create a RESTful API in PHP.

2023

How can you write test cases for a PHP class using PHPUnit?

What is PHPUnit, and how do you use it for unit testing?

How can you minimize database queries in PHP applications?

Explain the concept of lazy loading in PHP.

What is opcode caching, and how does it improve PHP performance?

How can you measure the execution time of a PHP script?

Explain the purpose of migrations in Laravel.

What are middleware in PHP frameworks, and why are they useful?

How do you define routes in a PHP framework?

What is MVC (Model-View-Controller) architecture, and how does it relate to PHP frameworks?

Describe the features of popular PHP frameworks like Laravel, Symfony, CodeIgniter, etc.

How can you send emails using PHP?

What are magic methods in PHP, and how do you use them?

How do you implement pagination in PHP?

Explain the purpose of register_globals in PHP.

How do you perform string comparisons in PHP, considering character encoding?

What is the use of microtime() function in PHP?

How can you handle file uploads in PHP?

2023

How do you protect against Cross-Site Request Forgery (CSRF) attacks?

What is Cross-Site Scripting (XSS), and how can you prevent it in PHP?

How do you prevent SQL injection attacks in PHP?

What are the common security vulnerabilities in PHP?

How do you set and retrieve cookies in PHP?

What is session hijacking, and how can you prevent it?

How do you handle session timeouts in PHP?

How can you store an array in a session variable?

Explain the differences between sessions and cookies.

How do you start and destroy a session in PHP?

How do you create custom exceptions in PHP?

What is the significance of throw statement in PHP?

How do you use try, catch, and finally blocks in PHP?

What is the purpose of exception handling in PHP?

How do you handle transactions in PHP?

What are the advantages of using MySQLi over MySQL in PHP?

How can you fetch data from a MySQL database using PHP?

Explain the steps to execute a prepared statement in PHP.

What is the purpose of PHP Data Objects (PDO)?

How do you connect to a database using PHP?

Explain the use of file_put_contents() function.

How do you create and extract ZIP archives in PHP?

What is the purpose of the file_get_contents() function?

How do you check if a file exists using PHP?

What are file permissions in PHP, and how can you set them?

How can you read and write CSV files in PHP?

Explain the difference between fread() and fgets() functions.

How do you open and close files in PHP?

How can you achieve method overriding in PHP?

What is the use of the final keyword in PHP classes?

How do you implement inheritance in PHP?

What are access modifiers in PHP, and what do they signify?

What is encapsulation in OOP, and how is it achieved in PHP?

Describe the constructor and destructor in PHP.

How do you create a class and instantiate an object?

Explain class and object in PHP.

What are the fundamental principles of Object-Oriented Programming (OOP)?

What is a callback function in PHP?

How can you pass a function as an argument to another function?

What are variable-length argument lists in PHP functions?

How do you declare a function with optional parameters in PHP?

Describe the difference between user-defined functions and built-in functions.

How do you manage cookies in PHP using $_COOKIE?

What is the purpose of $_SESSION variable?

PHP interview, PHP Strings

2023

How do you retrieve client IP address using PHP?

PHP interview, PHP Strings

Explain $_GET, $_POST, and $_REQUEST variables.

PHP interview, PHP Strings

What are superglobals in PHP?

PHP interview, PHP Strings

Explain the difference between single-quoted and double-quoted strings.

PHP interview, PHP Strings

How can you format strings using sprintf() in PHP?

PHP interview, PHP Strings

What is the purpose of nl2br() function?

PHP interview, PHP Strings

Explain the trim() and rtrim() functions in PHP.

PHP interview, PHP Strings

How can you replace a substring in a string?

PHP interview, PHP Strings

What is the use of strpos() function in PHP?

PHP interview, PHP Strings

How do you find the length of a string in PHP?

PHP interview, PHP Strings

Explain the concatenation operator in PHP.

PHP interview, PHP Strings

How do you declare a string in PHP?

PHP Arrays, PHP interview

What are multidimensional arrays in PHP?

PHP Arrays, PHP interview

How can you search for a specific value in an array?

PHP Arrays, PHP interview

What is the use of array_slice()?

PHP Arrays, PHP interview

How do you merge two arrays in PHP?

PHP Arrays, PHP interview

Explain the array_key_exists() function.

PHP Arrays, PHP interview

How can you iterate through an array using a loop?

PHP Arrays, PHP interview

What are associative arrays in PHP?

PHP Arrays, PHP interview

How do you access elements in an array?

How can you create an array in PHP?

PHP Arrays, PHP interview

What is an array in PHP?

2023

How do you pass arguments to a function in PHP?

Explain the return statement in PHP

What is recursion, and how do you achieve it in PHP?

How can you create a user-defined function in PHP?

Php, PHP interview

What is the difference between break and continue in PHP?

Php, PHP interview

How do you use the for each loop in PHP?

Php, PHP interview

Explain the for loop in PHP.

Php, PHP interview

What is the purpose of the while loop in PHP?

Php, PHP interview

How does the switch statement work in PHP?

Describe if…else statement in PHP.

What is the ternary operator in PHP?

How do you handle errors in PHP?

What is the use of the echo statement in PHP?

How can you embed PHP code within HTML?

What is the purpose of the error_reporting the directive in PHP?

Explain the significance of the php.ini file.

How do you comment in PHP?

What is the difference between single quotes and double quotes in PHP?

Php, PHP interview

2023

How do you declare a variable in PHP?

Php, PHP interview

What are the data types supported in PHP?

Php, PHP interview

Explain the working principle of PHP.

Php, PHP interview

How is PHP different from other server-side scripting languages?

Php, PHP interview

What are the advantages of using PHP?

Php, PHP interview

What is PHP?

2023

300 PHP interview questions