crm/app/logics/Base.php

<?php

namespace app\logics;

class Base
{
    //创建 SingleObject 的一个对象
    protected static $instance;

    //让构造函数为 private，这样该类就不会被实例化
    public function __contruct()
    {
    }

    //获取唯一可用的对象
    protected static function getInstance()
    {
        $className = static::class;
        if (!isset(self::$instance[$className])) {
            self::$instance[$className] = new $className();
        }
        return self::$instance[$className];
    }

    public static function __callStatic($name, $arguments)
    {
        return call_user_func_array(array(self::getInstance(), $name), $arguments);
    }
}