How can one ensure that changes made to parameters in one PHP file are automatically reflected in another PHP file?

When changes are made to parameters in one PHP file, those changes may not be automatically reflected in another PHP file if the files are not directly connected. To ensure that changes are synchronized between files, you can use a configuration file where parameters are defined and included in both PHP files. By centralizing the parameters in a configuration file, any updates made to the parameters will be automatically reflected in all files that include the configuration file.

// config.php
<?php
$param1 = 'value1';
$param2 = 'value2';
?>

// file1.php
<?php
include 'config.php';
echo $param1; // Output: value1
?>

// file2.php
<?php
include 'config.php';
echo $param2; // Output: value2
?>