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?

<p>Two</p> Signup and view all the answers

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

<p>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</p> Signup and view all the answers

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

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

What is the significance of the semicolon (;) in PHP scripts?

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

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

<p>By preceding the number with 0b.</p> Signup and view all the answers

What is the maximum size of a string in PHP?

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

What is the purpose of the echo statement in PHP?

<p>To output text on a web page.</p> Signup and view all the answers

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

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

What is the file extension used to identify PHP files?

<p>.php</p> Signup and view all the answers

How do you enclose PHP code in an HTML document?

<p>With PHP tags starting with &lt;?php</p> Signup and view all the answers

Is PHP a case-sensitive language?

<p>Yes</p> Signup and view all the answers

What is the purpose of PHP tags?

<p>To distinguish PHP code from HTML code</p> Signup and view all the answers

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

<p>Yes</p> Signup and view all the answers

What is the recommended case for PHP tags?

<p>Lower case</p> Signup and view all the answers

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