How to write comments in php

What is a comment in PHP?

A comment in PHP code is a line that is not executed as a part of the program. Its only purpose is to be read by someone who is looking at the code. Comments can be used to: Let others understand your code.

How do you comment out a line of code in PHP?

PHP comment

  1. single line comment used for quick notes about complex code or to temporarily disable a line of PHP code. You need to add // or # before the code.
  2. multi-line comment used to comment out large blocks of code or writing multiple line comments. You need to add /* before and */ after the code.

How do you write a function comment?

How to comment Code: Primarily, a single “block” comment should be placed at the top of the function (or file) and describe the purpose the code and any algorithms used to accomplish the goal. In-line comments should be used sparingly, only where the code is not “self-documenting”.

How are comments written in HTML?

This element is used to add a comment to an HTML document. An HTML comment begins with <! –– and the comment closes with ––> . HTML comments are visible to anyone that views the page source code, but are not rendered when the HTML document is rendered by a browser.

How do you write Hello World in PHP?

php // Declare the variable ‘string’ and assign it a value. // The <br> is the HTML equivalent to a new line. $string = ‘Hello World! <br>’; // You can echo the variable, similar to the way you would echo a string. echo $string; // You could also use print.

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What does PHP stands for?

PHP: Hypertext Preprocessor

How do you create a cookie in PHP?

Cookies are usually set in an HTTP header but JavaScript can also set a cookie directly on a browser. Setting Cookie In PHP: To set a cookie in PHP,the setcookie() function is used. The setcookie() function needs to be called prior to any output generated by the script otherwise the cookie will not be set.

Is PHP case sensitive?

In PHP, variable and constant names are case sensitive, while function names are not.

What is the correct way to end PHP statements?

As in C or Perl, PHP requires instructions to be terminated with a semicolon at the end of each statement. The closing tag of a block of PHP code automatically implies a semicolon; you do not need to have a semicolon terminating the last line of a PHP block.

What contains detailed comments about something in the text?

The comment line contains detailed comments about something regarding the text. … There are two ways of writing comment lines. Firstly, the single-line comment line and secondly multilevel comment line. Comment lines are sometimes referred to as programmer readable explanations of a program.

What are comments?

In computer programming, a comment is a programmer-readable explanation or annotation in the source code of a computer program. They are added with the purpose of making the source code easier for humans to understand, and are generally ignored by compilers and interpreters.

How do you write an introduction to a comment?

Structure and Content. Use the introduction to get the reader’s attention and interest in the topic. Define the problem you are going to discuss and provide a short overview on what you think and why. Summarize the most important arguments that best support your opinion.

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Which is the correct CSS syntax?

The selector points to the HTML element you want to style. The declaration block contains one or more declarations separated by semicolons. Each declaration includes a CSS property name and a value, separated by a colon.

What is BDO tag?

BDO stands for Bi-Directional Override. The <bdo> tag is used to override the current text direction.

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