How do server configurations, database servers, and hardware impact the performance of PHP code utilizing functions and includes?

Server configurations, database servers, and hardware can impact the performance of PHP code utilizing functions and includes by affecting the speed at which the code is executed and the resources available for processing. To optimize performance, ensure that the server configurations are tuned for PHP, the database server is optimized for queries, and the hardware meets the requirements for running PHP efficiently.

// Example PHP code snippet with optimized server configurations, database server, and hardware
// This code assumes that the server configurations, database server, and hardware have been optimized for PHP performance

// Include a file with optimized server configurations
include 'optimized_server_config.php';

// Connect to a database server optimized for queries
$connection = new mysqli($db_host, $db_user, $db_password, $db_name);

// Perform operations using optimized hardware
$cpu_cores = 8;
$ram_size = '16GB';

// Your PHP code utilizing functions and includes goes here