autoload.php

<?php
/**
 * Simple PSR-4 Autoloader for Hypercart Server Monitor
 *
 * @package Hypercart_Server_Monitor
 */

spl_autoload_register( function ( $class ) {
// Project-specific namespace prefix.
$prefix = 'Hypercart_Server_Monitor\\';

// Base directory for the namespace prefix.
$base_dir = __DIR__ . '/src/';

// Does the class use the namespace prefix?
$len = strlen( $prefix );
if ( strncmp( $prefix, $class, $len ) !== 0 ) {
// No, move to the next registered autoloader.
return;
}

// Get the relative class name.
$relative_class = substr( $class, $len );

// Replace namespace separators with directory separators.
// Replace underscores with directory separators (for PSR-0 compatibility).
$file = $base_dir . str_replace( '\\', '/', $relative_class ) . '.php';

// If the file exists, require it.
if ( file_exists( $file ) ) {
require $file;
}
} );