Q: What is PHP? A: PHP (Hypertext Preprocessor) is a server-side scripting language designed for web development. It is used to create dynamic web pages and web applications.
Q: What are the benefits of using PHP? A: Some benefits of using PHP include its ease of use, flexibility, scalability, and availability of a large community of developers and resources.
Q: What is a PHP file? A: A PHP file is a file containing PHP code that is executed by a web server when requested by a client. It can be used to create dynamic web pages and web applications.
Q: What is a variable in PHP? A: A variable in PHP is a container for storing data. It is created by assigning a value to a name, which can be used to reference the value throughout the script.
Q: What is the difference between echo and print in PHP? A: The difference between echo and print in PHP is that echo is a language construct and does not have a return value, while print is a function and has a return value of 1.
Q: What is a session in PHP? A: A session in PHP is a way to store information about a user across multiple page requests. It allows you to store and retrieve information about a user, such as their login credentials or shopping cart items.
Q: What is a cookie in PHP? A: A cookie in PHP is a small file that is stored on a user’s computer by a website. It can be used to store information about the user, such as their preferences or login credentials.
Q: What is the difference between include and require in PHP? A: The difference between include and require in PHP is that include will produce a warning and continue executing the script if the file cannot be found, while require will produce a fatal error and stop executing the script.
Q: What is PDO in PHP? A: PDO (PHP Data Objects) in PHP is a database abstraction layer that provides a consistent interface for interacting with different types of databases. It allows you to write database-independent code and provides features such as prepared statements and parameterized queries to prevent SQL injection attacks.
Q: What is a namespace in PHP? A: A namespace in PHP is a way to group related classes, functions, and constants together to avoid naming conflicts. It allows you to define multiple classes with the same name in different namespaces without causing a conflict.
