How to comment in php

How do I comment out PHP in HTML?

PHP supports several ways of commenting:

  1. Syntax for single-line comments: <! DOCTYPE html> <html> <body> // This is a single-line comment. …
  2. Syntax for multiple-line comments: <! DOCTYPE html> <html> <body> /* …
  3. Using comments to leave out parts of the code: <! DOCTYPE html> <html> <body>

How do I comment out a block of PHP code?

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 should we add a single line comment in our PHP code?

PHP Comment Syntax: Single Line Comment

To do a single line comment type “//” or “#” and all text to the right will be ignored by PHP interpreter.

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”.

What does PHP stands for?

PHP: Hypertext Preprocessor

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 is the correct way to end PHP statement?

Instruction separation ¶

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.

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.

What will be the value of $var in PHP?

PHP $$var uses the value of the variable whose name is the value of $var. It means $$var is known as reference variable where as $var is normal variable. It allows you to have a “variable’s variable” – the program can create the variable name the same way it can create any other string.

What is difference between echo and print in PHP?

They are both used to output data to the screen. The differences are small: echo has no return value while print has a return value of 1 so it can be used in expressions. echo can take multiple parameters (although such usage is rare) while print can take one argument. echo is marginally faster than print .

How do you comment shortcut?

The Basics. The most basic shortcut for creating a comment is Ctrl+K, Ctrl+C.

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How do I create a new line in PHP?

Answer: Use the Newline Characters ‘ n ‘ or ‘ rn ‘ You can use the PHP newline characters n or rn to create a new line inside the source code. However, if you want the line breaks to be visible in the browser too, you can use the PHP nl2br() function which inserts HTML line breaks before all newlines in a string.

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 I comment in JSON?

JSON does not support comments. It was also never intended to be used for configuration files where comments would be needed. Hjson is a configuration file format for humans. Relaxed syntax, fewer mistakes, more comments.

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