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Understanding PHP Comments

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Questions and Answers

What is the primary purpose of comments in PHP?

To serve as notes to the web developer or others viewing the website's source code

What character sequence is used to initiate a single-line comment in PHP?

// or #

How does a single-line comment affect the PHP interpreter?

It tells the interpreter to ignore everything on that line to the right of the comment.

What is a key difference between HTML and PHP comments?

PHP has two types of comments, whereas HTML has only one. Signup and view all the answers

What is the benefit of using comments in PHP code?

They allow developers to add notes and explanations, making the code more readable and maintainable. Signup and view all the answers

What are the basics of PHP that a programmer should know?

PHP syntax, data types, variables, operators, and arrays Signup and view all the answers

What is the purpose of using comments in PHP coding?

To add notes or explanations to the code, making it easier to understand Signup and view all the answers

How does a PHP program control the flow of execution?

Using program flow control structures such as if/else statements, loops, and conditional statements Signup and view all the answers

What is the purpose of connecting to a MySQL database in PHP?

To interact with the database and perform CRUD (Create, Read, Update, Delete) operations Signup and view all the answers

What is the role of frameworks in PHP development?

To provide a structured approach to building PHP applications, promoting reusability and maintainability Signup and view all the answers

How does PHP handle errors and exceptions?

Using try-catch blocks, error reporting, and custom error handlers Signup and view all the answers

What is the purpose of server-side processing in PHP?

To interact with permanent storage like databases or files, render pages to the client, and process user input. Signup and view all the answers

What is the maximum size of a PHP string?

2GB (2147483647 bytes) Signup and view all the answers

How do you specify an integer in binary notation in PHP?

By preceding the number with 0b Signup and view all the answers

What happens when a PHP file is requested by a web browser?

The web server seeks the file, checks if it has a PHP extension, and transmits it to PHP for analysis and execution. Signup and view all the answers

What is the purpose of the 'echo' function in PHP?

To output text to a web page Signup and view all the answers

What is the purpose of a semicolon (;) in PHP?

To end a PHP statement Signup and view all the answers