If you're working with PHP, one of the most important concepts you should know is constants — and that’s where define() comes in ๐
๐น What is define()?define() is a built-in PHP function used to create a constant value that cannot be changed during script execution.
๐น Why use constants?
Constants are perfect for storing values that should remain fixed, like:
- Website name
- Database credentials
- API keys
- Company details
๐น Basic Syntax:
define("CONSTANT_NAME", "value");
Check the video
Code
<?php
define("channel","youtube@phpecho");
define("contact","+91-2221221221");
?>
<?php echo channel; ?>
<?php echo contact; ?>
