What are some best practices for structuring PHP files and header files to ensure proper functionality and organization?

To ensure proper functionality and organization in PHP files, it is best practice to separate your code into different files for better maintainability and readability. One common approach is to use header files to store reusable code, such as functions, constants, and configuration settings, that can be included in other PHP files when needed. 

// header.php
<?php
// Define constants
define('SITE_NAME', 'My Website');

// Include functions
include 'functions.php';
?>

// index.php
<?php
// Include header file
include 'header.php';

// Use constants and functions from header file
echo SITE_NAME;
echo get_current_date();
?>

Keywords

PHP files header files file structure include_once namespace

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