How to use comments in PHP
Posted By
Bajarangi soft ,
Posted On 03-10-2022
A PHP script is executed on the server, and the plain HTML result is sent back to the browser.
- Default PHP syntax strat with "<? php" and ends with "?>".
- You can placed your PHP script anywhere in the document.
Syntax:
<?php
// Here you write code.
?>
- Aftre use of PHP syntax you have to use ".php" extention of your files.
- it will contains HTML tags, and some PHP scripting code.
- Below, we have an example of a simple PHP file that will return a string.
Example:
<!DOCTYPE html>
<html>
<body>
<h1>My BLogs</h1>
<?
echo "Welcome To My Blog Page !";
?>
</body>
</html>
Output:
- it will return a string which we were passed in a 'echo' function.
//Output will look like this....
Welcome To My Blog Page !
Commenting PHP Code:
A comment is the part of a program that exists only for the human reader and stripped out before displaying the programs result. There are two commenting types in PHP −
Single-line comments :
it is generally used for some short explaination or related note about local code in your PHP file.
Example:
<?
// Blogs started from here !!
echo "Welcome To My Blog Page !";
?>
Multi-lines comments :
They are generally used to provide detailed explanations when necessary or commenting some PHP code.
Example:
<?
//Multi-line comment Example
// Blogs started from here !!
// echo" Welcome to Blogs";
echo "Welcome To My Blog Page !";
?>
For both example output will be same,
Output:
//Output will look like this....
Welcome To My Blog Page !
Note:
in a PHP if any expression that is followed by a semicolon (;) that is valid PHP statements that is enclosed by the PHP tags is a valid PHP program.
