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PHP Basics and File Extensions

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Questions and Answers

What is the purpose of comments in PHP?

To serve as a note to the web developer or others who may view the website's source code

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

// or #

What happens to the text between the start and end of a PHP comment?

It is ignored by the PHP interpreter

How many types of comments does PHP have?

Two Signup and view all the answers

What is the difference between a single line comment and an HTML comment?

A single line comment in PHP ignores everything on the line to the right of the comment, whereas an HTML comment has a different syntax Signup and view all the answers

What is the purpose of server-side processing in a web application?

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 significance of the semicolon (;) in PHP scripts?

PHP statements end with a semicolon (;). Signup and view all the answers

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

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

What is the maximum size of a string in PHP?

Up to 2GB (2147483647 bytes maximum). Signup and view all the answers

What is the purpose of the `echo` statement in PHP?

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

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

The Web server transmits the file to PHP, which analyzes and executes the PHP code. Signup and view all the answers

What is the file extension used to identify PHP files?

.php Signup and view all the answers

How do you enclose PHP code in an HTML document?

With PHP tags starting with <?php Signup and view all the answers

Is PHP a case-sensitive language?

Yes Signup and view all the answers

What is the purpose of PHP tags?

To distinguish PHP code from HTML code Signup and view all the answers

Can a PHP script be placed anywhere in an HTML document?

Yes Signup and view all the answers

What is the recommended case for PHP tags?

Lower case Signup and view all the answers