doucheng4094 2015-03-24 06:23
浏览 89
已采纳

PHP类用静态方法,挂钩之前

I have the following class in PHP with all static methods:

class Foo {
    public static function a {
    }

    public static function b {
    }

    public static function c {
    }

    public static function d {
    }

    public static function e {
    }
}

Is there a way to create a hook to fire before calling any of the methods in class Foo i.e. like a before hook? I need some logic, and don't want to have to add that logic to every static function like:

class Foo {
    private static function init() {
        // pre logic here
    }

    public static function a {
        Foo::init();
    }

    public static function b {
        Foo::init();
    }

    public static function c {
        Foo::init();
    }

    public static function d {
        Foo::init();
    }

    public static function e {
        Foo::init();
    }
}
  • 写回答

4条回答 默认 最新

  • doubei8541 2015-03-24 06:44
    关注

    What you want is called an Aspect-Oriented Programming. It allows to define an advice before method call, property access, class initialization, etc.

    However, this technique is not used widely in PHP due to its complexity. I can suggest your an example with Go! AOP Framework.

    class AutoInitializationAspect implements Aspect
    {
    
        /**
         * This advice intercepts an execution of static methods
         *
         * We use "Before" type of advice to initialize the state
         *
         * @param MethodInvocation $invocation Invocation
         *
         * @Before("execution(public Foo::*(*))", scope="target")
         */
        public function beforeMethodExecution(MethodInvocation $invocation)
        {
            $class = $invocation->getThis(); // will be the class name
            $class::init(); // access to the private scope of class
        }
    }
    

    Visit http://demo.aopphp.com/?showcase=loggable for demo (see LoggingDemo::runByName() static method intercepted)

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论
查看更多回答(3条)

报告相同问题?

悬赏问题

  • ¥100 需求高精度PT100设计电路和算法
  • ¥15 单片机配网,继电器开关,广播
  • ¥60 Qcustomplot绘制实时动态曲线
  • ¥20 运用matlab画x-y图
  • ¥15 用idea运行项目,运行tomcat报错:断言失败
  • ¥15 Sqlserver查询链接服务器数据问题
  • ¥15 Bibtex4Word 引用中文文献
  • ¥20 用opencv c/c++ 转换成灰度图,然后做一下直方图均衡,输出mp4文件
  • ¥20 matlab中的双层数值积分
  • ¥50 服务器打印水晶报表问题