What are common pitfalls when transferring PHP code from one server to another, especially when it involves database connections?

Common pitfalls when transferring PHP code from one server to another, especially when it involves database connections, include differences in server configurations, such as database credentials or server paths. To solve this issue, it is recommended to use a separate configuration file for storing database connection details and ensuring that this file is properly updated when transferring the code to a new server. 

// config.php

define('DB_HOST', 'new_host');
define('DB_USER', 'new_user');
define('DB_PASS', 'new_password');
define('DB_NAME', 'new_database');

// db_connection.php

require_once 'config.php';

$connection = new mysqli(DB_HOST, DB_USER, DB_PASS, DB_NAME);

if ($connection->connect_error) {
    die("Connection failed: " . $connection->connect_error);
}

Keywords

PHP database connection server migration configuration settings error handling

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