How can developers ensure that the correct configuration values are being used in PHP scripts?

Developers can ensure that the correct configuration values are being used in PHP scripts by storing these values in a separate configuration file (e.g., config.php) and including this file in their scripts. By centralizing the configuration values in one place, developers can easily update them as needed without having to modify multiple scripts. Additionally, developers can use constants to define these configuration values, making them more secure and preventing accidental changes. 

// config.php
define('DB_HOST', 'localhost');
define('DB_USER', 'username');
define('DB_PASS', 'password');
define('DB_NAME', 'database_name');

// script.php
include 'config.php';

$conn = new mysqli(DB_HOST, DB_USER, DB_PASS, DB_NAME);
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

Keywords

configuration values PHP scripts environment variables constants error handling

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