opkpm/vendor/yly-openapi/yly-openapi-sdk/Lib/Autoloader.php

<?php

namespace App;

class Autoloader{

    public static function loadByNamespace($name)
    {
        $class_path = str_replace('\\', DIRECTORY_SEPARATOR, $name);
        if (strpos($name, 'App\\') === 0) {
            $class_file = __DIR__ . substr($class_path, strlen('App')) . '.php';
        }elseif(empty($class_file) || !is_file($class_file)){
            $class_file = __DIR__ . DIRECTORY_SEPARATOR . '..' . DIRECTORY_SEPARATOR . $class_path . ".php";
        }
        if (is_file($class_file)) {
            require_once ($class_file);
            if (class_exists($name, false)) {
                return true;
            }
        }
        return false;

    }

}

spl_autoload_register('\App\Autoloader::loadByNamespace');