What are the best practices for handling constants in PHP scripts?

When handling constants in PHP scripts, it is important to define them using the `define()` function to ensure they cannot be changed during the script execution. It is also recommended to use uppercase letters and underscores to name constants for better readability and convention. Additionally, constants should be defined at the beginning of the script to make them easily accessible throughout the code. 

<?php

// Define constants using the define() function
define('MAX_LOGIN_ATTEMPTS', 3);
define('DB_HOST', 'localhost');
define('DB_USER', 'root');
define('DB_PASS', 'password');

// Constants can now be used throughout the script
echo "Maximum login attempts: " . MAX_LOGIN_ATTEMPTS;
echo "Database host: " . DB_HOST;

?>

Keywords

constant define const configuration error_reporting

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