class. * * @param string $class * the name of the class to load */ function mmdb_autoload($class) { /* * A project-specific mapping between the namespaces and where * they're located. By convention, we include the trailing * slashes. The one-element array here simply makes things easy * to extend in the future if (for example) the test classes * begin to use one another. */ $namespace_map = ['MaxMind\\Db\\' => __DIR__ . '/src/MaxMind/Db/']; foreach ($namespace_map as $prefix => $dir) { /* First swap out the namespace prefix with a directory... */ $path = str_replace($prefix, $dir, $class); /* replace the namespace separator with a directory separator... */ $path = str_replace('\\', '/', $path); /* and finally, add the PHP file extension to the result. */ $path = $path . '.php'; /* $path should now contain the path to a PHP file defining $class */ if (file_exists($path)) { include $path; } } } spl_autoload_register('mmdb_autoload');