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一片凤甯 發表於 2022-11-4 17:40:00

php注解使用示例

<div style="margin-left: 30px">今天看到php注解的介绍文章很感兴趣，动手实际试了试挺好玩，写这篇文章记录下</div>
<div>php从8开始支持原生注解功能了，我们可以写个小的例子看看注解怎么玩。</div>
<div>&nbsp;</div>
<div>先确定我们的任务目标</div>
<div style="margin-left: 30px">1、编写一个注解类route处理根据注解反射将使用注解的方法加入到路由列表</div>
<div style="margin-left: 30px">2、定义入口文件初始化项目自动完成路由列表的更新</div>
<div style="margin-left: 30px">3、根据URL请求从路由列表获取路由信息找到对应类实例化并执行对应方法</div>
<div style="margin-left: 30px">&nbsp;</div>
<div>
<div>先做个约定：</div>
<div>1、约定路由格式为:http://localhost/8/index.php?c=index&amp;a=index</div>
<div>
<div>这里c 表示控制器controller，a 表示动作 action 也就是类方法</div>
<div>
<div>2、约定目录结构</div>
<div>root</div>
<div>|---index.php</div>
<div>|---config.php</div>
<div>|---route.php</div>
<div style="margin-left: 30px">---|controller</div>
<div style="margin-left: 30px">|---index.php</div>
<div style="margin-left: 30px">|---work.php</div>
<div>&nbsp;</div>
<div>config.php配置文件，route.php注解路由类文件和index.php 入口文件平级</div>
<div>controller/indexController.php,controller/workController.php两个使用注解的测试控制器位于下一级目录controller中</div>
<div>&nbsp;</div>
<div>
<div>前期准备</div>
<div>先准备两个类用来测试</div>
<div>
<div class="cnblogs_code">
<pre>&lt;?<span style="color: rgba(0, 0, 0, 1)">php
</span><span style="color: rgba(0, 0, 255, 1)">class</span><span style="color: rgba(0, 0, 0, 1)"> indexController
{
    </span><span style="color: rgba(0, 128, 0, 1)">#</span><span style="color: rgba(0, 128, 0, 1)"></span>
    <span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">function</span> index():<span style="color: rgba(0, 0, 0, 1)">void
    {
      </span><span style="color: rgba(0, 0, 255, 1)">echo</span> "This is attribute index controller \r\n"<span style="color: rgba(0, 0, 0, 1)">;
    }

    </span><span style="color: rgba(0, 128, 0, 1)">#</span><span style="color: rgba(0, 128, 0, 1)"></span>
    <span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">function</span> test():<span style="color: rgba(0, 0, 0, 1)">void
    {
      </span><span style="color: rgba(0, 0, 255, 1)">echo</span> "This is attribute test controller \r\n"<span style="color: rgba(0, 0, 0, 1)">;
    }
}</span></pre>
</div>
<p>&nbsp;</p>
</div>
<div>
<div>indexController控制器类，有两个方法index和test</div>
<div>
<div class="cnblogs_code">
<pre>&lt;?<span style="color: rgba(0, 0, 0, 1)">php
</span><span style="color: rgba(0, 0, 255, 1)">class</span><span style="color: rgba(0, 0, 0, 1)"> workController
{
    </span><span style="color: rgba(0, 128, 0, 1)">#</span><span style="color: rgba(0, 128, 0, 1)"></span>
    <span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">function</span> work():<span style="color: rgba(0, 0, 0, 1)">void
    {
      </span><span style="color: rgba(0, 0, 255, 1)">echo</span> "This is attribute work controller \r\n"<span style="color: rgba(0, 0, 0, 1)">;
    }
}</span></pre>
</div>
<p>&nbsp;</p>
</div>
<div>
<div>workController控制器类，有一个方法work</div>
<div>&nbsp;</div>
<div>
<div>前期工作完成，开始实际编写注解路由类</div>
<div>
<div class="cnblogs_code">
<pre>&lt;?<span style="color: rgba(0, 0, 0, 1)">php
</span><span style="color: rgba(0, 128, 0, 1)">#</span><span style="color: rgba(0, 128, 0, 1)"></span>
<span style="color: rgba(0, 0, 255, 1)">class</span><span style="color: rgba(0, 0, 0, 1)"> route{

    </span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">static</span> <span style="color: rgba(128, 0, 128, 1)">$all</span> =<span style="color: rgba(0, 0, 0, 1)"> [];

    </span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">static</span> <span style="color: rgba(128, 0, 128, 1)">$path</span> = ''<span style="color: rgba(0, 0, 0, 1)">;

    </span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">static</span> <span style="color: rgba(128, 0, 128, 1)">$method</span> = 'GET'<span style="color: rgba(0, 0, 0, 1)">;

    </span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">static</span> <span style="color: rgba(128, 0, 128, 1)">$function</span> = ''<span style="color: rgba(0, 0, 0, 1)">;

    </span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">static</span> <span style="color: rgba(128, 0, 128, 1)">$controller</span> = ''<span style="color: rgba(0, 0, 0, 1)">;

    </span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">function</span><span style="color: rgba(0, 0, 0, 1)"> __construct(){}


    </span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">function</span> setPath(<span style="color: rgba(0, 0, 255, 1)">string</span> <span style="color: rgba(128, 0, 128, 1)">$path</span>):<span style="color: rgba(0, 0, 0, 1)">self
    {
      </span><span style="color: rgba(128, 0, 128, 1)">$this</span>-&gt;path = <span style="color: rgba(128, 0, 128, 1)">$path</span><span style="color: rgba(0, 0, 0, 1)">;
      </span><span style="color: rgba(0, 0, 255, 1)">return</span> <span style="color: rgba(128, 0, 128, 1)">$this</span><span style="color: rgba(0, 0, 0, 1)">;
    }

    </span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">function</span> setMethod(<span style="color: rgba(0, 0, 255, 1)">string</span> <span style="color: rgba(128, 0, 128, 1)">$method</span>):<span style="color: rgba(0, 0, 0, 1)">self
    {
      </span><span style="color: rgba(128, 0, 128, 1)">$this</span>-&gt;method = <span style="color: rgba(128, 0, 128, 1)">$method</span><span style="color: rgba(0, 0, 0, 1)">;
      </span><span style="color: rgba(0, 0, 255, 1)">return</span> <span style="color: rgba(128, 0, 128, 1)">$this</span><span style="color: rgba(0, 0, 0, 1)">;
    }

    </span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">function</span> setFunction(<span style="color: rgba(0, 0, 255, 1)">string</span> <span style="color: rgba(128, 0, 128, 1)">$function</span>):<span style="color: rgba(0, 0, 0, 1)">self
    {
      </span><span style="color: rgba(128, 0, 128, 1)">$this</span>-&gt;<span style="color: rgba(0, 0, 255, 1)">function</span> = <span style="color: rgba(128, 0, 128, 1)">$function</span><span style="color: rgba(0, 0, 0, 1)">;
      </span><span style="color: rgba(0, 0, 255, 1)">return</span> <span style="color: rgba(128, 0, 128, 1)">$this</span><span style="color: rgba(0, 0, 0, 1)">;
    }

    </span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">function</span> setController(<span style="color: rgba(0, 0, 255, 1)">string</span> <span style="color: rgba(128, 0, 128, 1)">$controller</span>):<span style="color: rgba(0, 0, 0, 1)">self
    {
      </span><span style="color: rgba(128, 0, 128, 1)">$this</span>-&gt;controller = <span style="color: rgba(128, 0, 128, 1)">$controller</span><span style="color: rgba(0, 0, 0, 1)">;
      </span><span style="color: rgba(0, 0, 255, 1)">return</span> <span style="color: rgba(128, 0, 128, 1)">$this</span><span style="color: rgba(0, 0, 0, 1)">;
    }


    </span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">function</span> addRoute():<span style="color: rgba(0, 0, 0, 1)">void
    {
      self</span>::<span style="color: rgba(128, 0, 128, 1)">$all</span>[<span style="color: rgba(0, 128, 128, 1)">str_replace</span>("Controller","",<span style="color: rgba(128, 0, 128, 1)">$this</span>-&gt;controller)][<span style="color: rgba(128, 0, 128, 1)">$this</span>-&gt;<span style="color: rgba(0, 0, 255, 1)">function</span>] = <span style="color: rgba(128, 0, 128, 1)">$this</span><span style="color: rgba(0, 0, 0, 1)">;
    }</span></pre>
</div>
<div>&nbsp;</div>
<div>先定义路由的相关类属性，这里不考虑访问范围问题都用public修饰符</div>
<div>在这个类中定义了设置path、method、function、controller属性的方法，返回值用$this表示可以链式调用</div>
<div>addRoute() 方法将当前对应按 [‘控制器’][‘方法’] 的二维数组存起来备用</div>
<div>这里要说明下#</div>
<div>这就是注解的定义，有这个表示这个类是注解类Attribute是注解关键词，后面小括号里的是注解属性配置</div>
<div>IS_REPEATABLE 表示这个注解可以重复使用</div>
<div>TARGET_METHOD 表示这个注解只能用来修饰类内的方法</div>
<div>&nbsp;</div>
<div>注意：这里定义的TARGET_METHOD在php语法检查时不会进行验证，即用这个注解修饰属性或类代码也不会报错，但执行会抛出异常</div>
</div>
<div>
<p>&nbsp;</p>
<div>有了注解类我们就可以开始实际使用了</div>
<div>
<div class="cnblogs_code">
<pre>&lt;?<span style="color: rgba(0, 0, 0, 1)">php
    </span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">static</span> <span style="color: rgba(0, 0, 255, 1)">function</span> setRoute(<span style="color: rgba(128, 0, 128, 1)">$controllerClass</span><span style="color: rgba(0, 0, 0, 1)">){
      </span>
      <span style="color: rgba(128, 0, 128, 1)">$ref</span> = <span style="color: rgba(0, 0, 255, 1)">new</span> ReflectionClass(<span style="color: rgba(128, 0, 128, 1)">$controllerClass</span><span style="color: rgba(0, 0, 0, 1)">);</span>
      <span style="color: rgba(128, 0, 128, 1)">$controller</span> = <span style="color: rgba(128, 0, 128, 1)">$ref</span>-&gt;<span style="color: rgba(0, 0, 0, 1)">getName();
      </span><span style="color: rgba(128, 0, 128, 1)">$methods</span> = <span style="color: rgba(128, 0, 128, 1)">$ref</span>-&gt;<span style="color: rgba(0, 0, 0, 1)">getMethods();

      </span><span style="color: rgba(0, 0, 255, 1)">foreach</span>(<span style="color: rgba(128, 0, 128, 1)">$methods</span> <span style="color: rgba(0, 0, 255, 1)">as</span> <span style="color: rgba(128, 0, 128, 1)">$method</span><span style="color: rgba(0, 0, 0, 1)">){
            </span><span style="color: rgba(128, 0, 128, 1)">$function</span> = <span style="color: rgba(128, 0, 128, 1)">$method</span>-&gt;<span style="color: rgba(0, 0, 0, 1)">getName();
            </span><span style="color: rgba(128, 0, 128, 1)">$attributes</span> = <span style="color: rgba(128, 0, 128, 1)">$method</span>-&gt;getAttributes(route::<span style="color: rgba(0, 0, 255, 1)">class</span><span style="color: rgba(0, 0, 0, 1)">);
</span>
            <span style="color: rgba(0, 0, 255, 1)">foreach</span>(<span style="color: rgba(128, 0, 128, 1)">$attributes</span> <span style="color: rgba(0, 0, 255, 1)">as</span> <span style="color: rgba(128, 0, 128, 1)">$attribute</span><span style="color: rgba(0, 0, 0, 1)">){
</span>
               <span style="color: rgba(128, 0, 128, 1)">$route</span> = <span style="color: rgba(128, 0, 128, 1)">$attribute</span>-&gt;<span style="color: rgba(0, 0, 0, 1)">newInstance();
                </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> 拿到注解上的参数</span>
                <span style="color: rgba(128, 0, 128, 1)">$params</span> = <span style="color: rgba(128, 0, 128, 1)">$attribute</span>-&gt;<span style="color: rgba(0, 0, 0, 1)">getArguments();

                </span><span style="color: rgba(128, 0, 128, 1)">$route</span>-&gt;setController(<span style="color: rgba(128, 0, 128, 1)">$controller</span><span style="color: rgba(0, 0, 0, 1)">)
                  </span>-&gt;setFunction(<span style="color: rgba(128, 0, 128, 1)">$function</span><span style="color: rgba(0, 0, 0, 1)">)
                  </span>-&gt;setPath(<span style="color: rgba(128, 0, 128, 1)">$params</span>)
                  </span>-&gt;setMethod(<span style="color: rgba(128, 0, 128, 1)">$params</span>)
                  </span>-&gt;<span style="color: rgba(0, 0, 0, 1)">addRoute();
            }
      }
    }
}</span></pre>
</div>
<div>在route类定义新的方法，根据注解反射路由列表setRoute()方法接收一个被route注解修饰的类作为参数。</div>
<div>通过反射获取控制器名称，方法列表将其调用route一系列方法设置属性并加入路由列表</div>
<div>&nbsp;</div>
<div>
<div>现在我们可以使用注解生成路由列表了</div>
<div>
<div>indexController类的两个方法都使用route注解进行修饰，并指定path和method两个参数</div>
<div>此时我们打印route::$all路由列表</div>
<div><img src="https://img2022.cnblogs.com/blog/2028339/202211/2028339-20221104173310906-1606702108.png">
<p>&nbsp;</p>
<p>&nbsp;</p>
<div>可以看到当前的路由列表确实是按照['控制器']['方法']的二维数组组装起来了，并且保存了每个路由的对象</div>
<div>到这里核心的使用注解生成路由列表其实已结束了，但如果不能看看效果谁知道你是不是胡说的呢？因此下面我们完善这个例子实现通过localhost/8/index.php?c=index&amp;a=index格式的URL访问对应控制器的功能</div>
<div>&nbsp;</div>
<div>
<div class="cnblogs_code">
<pre>&lt;?<span style="color: rgba(0, 0, 0, 1)">php
</span><span style="color: rgba(0, 0, 255, 1)">class</span><span style="color: rgba(0, 0, 0, 1)"> app{
    </span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">function</span> appInit():<span style="color: rgba(0, 0, 0, 1)">self
    {
      </span><span style="color: rgba(0, 0, 255, 1)">if</span>(<span style="color: rgba(0, 128, 128, 1)">glob</span>("./controller/*.php"<span style="color: rgba(0, 0, 0, 1)">)){
            </span><span style="color: rgba(0, 0, 255, 1)">foreach</span>(<span style="color: rgba(0, 128, 128, 1)">glob</span>("./controller/*.php") <span style="color: rgba(0, 0, 255, 1)">as</span> <span style="color: rgba(128, 0, 128, 1)">$fileName</span><span style="color: rgba(0, 0, 0, 1)">){
                </span><span style="color: rgba(0, 0, 255, 1)">require_once</span>(<span style="color: rgba(128, 0, 128, 1)">$fileName</span><span style="color: rgba(0, 0, 0, 1)">);
                </span><span style="color: rgba(128, 0, 128, 1)">$className</span> = <span style="color: rgba(0, 128, 128, 1)">str_replace</span>("./controller/","",<span style="color: rgba(0, 128, 128, 1)">str_replace</span>(".php","",<span style="color: rgba(128, 0, 128, 1)">$fileName</span><span style="color: rgba(0, 0, 0, 1)">));
                route</span>::setRoute(<span style="color: rgba(128, 0, 128, 1)">$className</span><span style="color: rgba(0, 0, 0, 1)">);
                </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">route::$all;exit();</span>
<span style="color: rgba(0, 0, 0, 1)">            }
      }

      </span><span style="color: rgba(0, 0, 255, 1)">return</span> <span style="color: rgba(128, 0, 128, 1)">$this</span><span style="color: rgba(0, 0, 0, 1)">;
    }

    </span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">function</span> run(<span style="color: rgba(128, 0, 128, 1)">$config</span><span style="color: rgba(0, 0, 0, 1)">){
      </span><span style="color: rgba(128, 0, 128, 1)">$controller</span> = <span style="color: rgba(128, 0, 128, 1)">$_GET</span>['c']??<span style="color: rgba(128, 0, 128, 1)">$config</span>['default_controller'<span style="color: rgba(0, 0, 0, 1)">];
      </span><span style="color: rgba(128, 0, 128, 1)">$action</span> = <span style="color: rgba(128, 0, 128, 1)">$_GET</span>['a']??<span style="color: rgba(128, 0, 128, 1)">$config</span>['default_function'<span style="color: rgba(0, 0, 0, 1)">];

      </span><span style="color: rgba(0, 0, 255, 1)">if</span>(<span style="color: rgba(0, 0, 255, 1)">isset</span>(route::<span style="color: rgba(128, 0, 128, 1)">$all</span>[<span style="color: rgba(128, 0, 128, 1)">$controller</span>][<span style="color: rgba(128, 0, 128, 1)">$action</span><span style="color: rgba(0, 0, 0, 1)">])){
            </span><span style="color: rgba(128, 0, 128, 1)">$route</span> = route::<span style="color: rgba(128, 0, 128, 1)">$all</span>[<span style="color: rgba(128, 0, 128, 1)">$controller</span>][<span style="color: rgba(128, 0, 128, 1)">$action</span><span style="color: rgba(0, 0, 0, 1)">];
            </span><span style="color: rgba(128, 0, 128, 1)">$className</span> = <span style="color: rgba(128, 0, 128, 1)">$route</span>-&gt;<span style="color: rgba(0, 0, 0, 1)">controller;
            </span><span style="color: rgba(128, 0, 128, 1)">$function</span> = <span style="color: rgba(128, 0, 128, 1)">$route</span>-&gt;<span style="color: rgba(0, 0, 255, 1)">function</span><span style="color: rgba(0, 0, 0, 1)">;
            (</span><span style="color: rgba(0, 0, 255, 1)">new</span> <span style="color: rgba(128, 0, 128, 1)">$className</span>)-&gt;<span style="color: rgba(128, 0, 128, 1)">$function</span><span style="color: rgba(0, 0, 0, 1)">();
      }</span><span style="color: rgba(0, 0, 255, 1)">else</span><span style="color: rgba(0, 0, 0, 1)">{
            </span><span style="color: rgba(0, 0, 255, 1)">exit</span>("404 Not Found!"<span style="color: rgba(0, 0, 0, 1)">);
      }
    }
}</span></pre>
</div>
<div>这里我们定义一个app类作为项目的基本对象当前类中定义了两个方法</div>
<div>appInit()初始化项目并返回类对象</div>
<div>run() 根据对应的配置运行指定的路由和操作</div>
<div>为方便处理我这里直接遍历了controller目录，在实际的项目中应该使用自动加载机制按需加载</div>
<div>初始化时将controller目录下的全部控制器方法调用route类加入到路由列表</div>
<div>&nbsp;</div>
<div>到这里我们只剩最后一步了，将请求过来的URL解析，找到controller 和 action 然后执行方法</div>
<div>这一步我们交给run（）方法执行，</div>
<div>run()方法接收$_GET参数 c 和 a 分别对应 控制器和动作</div>
<div>判断如果路由列表中有对应的控制器和方法则将类实例化，调用对应方法，如果路由列表中没有这个对应路由则返回404错误。</div>
<div>需要指出的是这里404并不一定是没有这个对应方法，也有可能是有方法但没有使用route注解修饰导致反射找不到这个方法。</div>
<div><img src="https://img2022.cnblogs.com/blog/2028339/202211/2028339-20221104173441380-1671492500.png">
<p>&nbsp;</p>
<p>&nbsp;</p>
<div>有此控制器和动作执行对应类对应方法</div>
<div><img src="https://img2022.cnblogs.com/blog/2028339/202211/2028339-20221104173501057-1345524826.png">
<p>&nbsp;</p>
<p>&nbsp;</p>
<div>没有这个动作或控制器返回404</div>
<div>最后为了健壮性我们增加一个默认的控制器和默认动作，如果URL中没有传任何控制器和动作参数则走默认动作，将这个配置提取到配置文件中</div>
<div>
<div class="cnblogs_code">
<pre>&lt;?<span style="color: rgba(0, 0, 0, 1)">php
</span><span style="color: rgba(128, 0, 128, 1)">$config</span> = <span style="color: rgba(0, 0, 255, 1)">array</span><span style="color: rgba(0, 0, 0, 1)">(
    </span>'default_controller'=&gt;'index',
    'default_function'=&gt;'index',<span style="color: rgba(0, 0, 0, 1)">
);


</span><span style="color: rgba(0, 0, 255, 1)">return</span> <span style="color: rgba(128, 0, 128, 1)">$config</span>;</pre>
</div>
<div>这样如果什么都不传我们的代码会默认访问index控制器下的index方法</div>
<div><img src="https://img2022.cnblogs.com/blog/2028339/202211/2028339-20221104173600446-432302361.png">
<p>&nbsp;</p>
<p>&nbsp;</p>
<div>贴上完整代码:</div>
<div>
<div class="cnblogs_code">
<pre>&lt;?<span style="color: rgba(0, 0, 0, 1)">php
</span><span style="color: rgba(0, 128, 0, 1)">#</span><span style="color: rgba(0, 128, 0, 1)"></span>
<span style="color: rgba(0, 0, 255, 1)">class</span><span style="color: rgba(0, 0, 0, 1)"> route{

    </span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">static</span> <span style="color: rgba(128, 0, 128, 1)">$all</span> =<span style="color: rgba(0, 0, 0, 1)"> [];

    </span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">static</span> <span style="color: rgba(128, 0, 128, 1)">$path</span> = ''<span style="color: rgba(0, 0, 0, 1)">;

    </span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">static</span> <span style="color: rgba(128, 0, 128, 1)">$method</span> = 'GET'<span style="color: rgba(0, 0, 0, 1)">;

    </span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">static</span> <span style="color: rgba(128, 0, 128, 1)">$function</span> = ''<span style="color: rgba(0, 0, 0, 1)">;

    </span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">static</span> <span style="color: rgba(128, 0, 128, 1)">$controller</span> = ''<span style="color: rgba(0, 0, 0, 1)">;

    </span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">function</span><span style="color: rgba(0, 0, 0, 1)"> __construct(){}


    </span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">function</span> setPath(<span style="color: rgba(0, 0, 255, 1)">string</span> <span style="color: rgba(128, 0, 128, 1)">$path</span>):<span style="color: rgba(0, 0, 0, 1)">self
    {
      </span><span style="color: rgba(128, 0, 128, 1)">$this</span>-&gt;path = <span style="color: rgba(128, 0, 128, 1)">$path</span><span style="color: rgba(0, 0, 0, 1)">;
      </span><span style="color: rgba(0, 0, 255, 1)">return</span> <span style="color: rgba(128, 0, 128, 1)">$this</span><span style="color: rgba(0, 0, 0, 1)">;
    }

    </span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">function</span> setMethod(<span style="color: rgba(0, 0, 255, 1)">string</span> <span style="color: rgba(128, 0, 128, 1)">$method</span>):<span style="color: rgba(0, 0, 0, 1)">self
    {
      </span><span style="color: rgba(128, 0, 128, 1)">$this</span>-&gt;method = <span style="color: rgba(128, 0, 128, 1)">$method</span><span style="color: rgba(0, 0, 0, 1)">;
      </span><span style="color: rgba(0, 0, 255, 1)">return</span> <span style="color: rgba(128, 0, 128, 1)">$this</span><span style="color: rgba(0, 0, 0, 1)">;
    }

    </span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">function</span> setFunction(<span style="color: rgba(0, 0, 255, 1)">string</span> <span style="color: rgba(128, 0, 128, 1)">$function</span>):<span style="color: rgba(0, 0, 0, 1)">self
    {
      </span><span style="color: rgba(128, 0, 128, 1)">$this</span>-&gt;<span style="color: rgba(0, 0, 255, 1)">function</span> = <span style="color: rgba(128, 0, 128, 1)">$function</span><span style="color: rgba(0, 0, 0, 1)">;
      </span><span style="color: rgba(0, 0, 255, 1)">return</span> <span style="color: rgba(128, 0, 128, 1)">$this</span><span style="color: rgba(0, 0, 0, 1)">;
    }

    </span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">function</span> setController(<span style="color: rgba(0, 0, 255, 1)">string</span> <span style="color: rgba(128, 0, 128, 1)">$controller</span>):<span style="color: rgba(0, 0, 0, 1)">self
    {
      </span><span style="color: rgba(128, 0, 128, 1)">$this</span>-&gt;controller = <span style="color: rgba(128, 0, 128, 1)">$controller</span><span style="color: rgba(0, 0, 0, 1)">;
      </span><span style="color: rgba(0, 0, 255, 1)">return</span> <span style="color: rgba(128, 0, 128, 1)">$this</span><span style="color: rgba(0, 0, 0, 1)">;
    }


    </span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">function</span> addRoute():<span style="color: rgba(0, 0, 0, 1)">void
    {
      self</span>::<span style="color: rgba(128, 0, 128, 1)">$all</span>[<span style="color: rgba(0, 128, 128, 1)">str_replace</span>("Controller","",<span style="color: rgba(128, 0, 128, 1)">$this</span>-&gt;controller)][<span style="color: rgba(128, 0, 128, 1)">$this</span>-&gt;<span style="color: rgba(0, 0, 255, 1)">function</span>] = <span style="color: rgba(128, 0, 128, 1)">$this</span><span style="color: rgba(0, 0, 0, 1)">;
    }

    </span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">static</span> <span style="color: rgba(0, 0, 255, 1)">function</span> setRoute(<span style="color: rgba(128, 0, 128, 1)">$controllerClass</span><span style="color: rgba(0, 0, 0, 1)">){
       </span>
      <span style="color: rgba(128, 0, 128, 1)">$ref</span> = <span style="color: rgba(0, 0, 255, 1)">new</span> ReflectionClass(<span style="color: rgba(128, 0, 128, 1)">$controllerClass</span><span style="color: rgba(0, 0, 0, 1)">);</span>

      <span style="color: rgba(128, 0, 128, 1)">$controller</span> = <span style="color: rgba(128, 0, 128, 1)">$ref</span>-&gt;<span style="color: rgba(0, 0, 0, 1)">getName();

      </span><span style="color: rgba(128, 0, 128, 1)">$methods</span> = <span style="color: rgba(128, 0, 128, 1)">$ref</span>-&gt;<span style="color: rgba(0, 0, 0, 1)">getMethods();


      </span><span style="color: rgba(0, 0, 255, 1)">foreach</span>(<span style="color: rgba(128, 0, 128, 1)">$methods</span> <span style="color: rgba(0, 0, 255, 1)">as</span> <span style="color: rgba(128, 0, 128, 1)">$method</span><span style="color: rgba(0, 0, 0, 1)">){
            </span><span style="color: rgba(128, 0, 128, 1)">$function</span> = <span style="color: rgba(128, 0, 128, 1)">$method</span>-&gt;<span style="color: rgba(0, 0, 0, 1)">getName();
            </span><span style="color: rgba(128, 0, 128, 1)">$attributes</span> = <span style="color: rgba(128, 0, 128, 1)">$method</span>-&gt;getAttributes(route::<span style="color: rgba(0, 0, 255, 1)">class</span><span style="color: rgba(0, 0, 0, 1)">);
</span>
            <span style="color: rgba(0, 0, 255, 1)">foreach</span>(<span style="color: rgba(128, 0, 128, 1)">$attributes</span> <span style="color: rgba(0, 0, 255, 1)">as</span> <span style="color: rgba(128, 0, 128, 1)">$attribute</span><span style="color: rgba(0, 0, 0, 1)">){
</span>
               <span style="color: rgba(128, 0, 128, 1)">$route</span> = <span style="color: rgba(128, 0, 128, 1)">$attribute</span>-&gt;<span style="color: rgba(0, 0, 0, 1)">newInstance();
                </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> 拿到注解上的参数</span>
                <span style="color: rgba(128, 0, 128, 1)">$params</span> = <span style="color: rgba(128, 0, 128, 1)">$attribute</span>-&gt;<span style="color: rgba(0, 0, 0, 1)">getArguments();

                </span><span style="color: rgba(128, 0, 128, 1)">$route</span>-&gt;setController(<span style="color: rgba(128, 0, 128, 1)">$controller</span><span style="color: rgba(0, 0, 0, 1)">)
                  </span>-&gt;setFunction(<span style="color: rgba(128, 0, 128, 1)">$function</span><span style="color: rgba(0, 0, 0, 1)">)
                  </span>-&gt;setPath(<span style="color: rgba(128, 0, 128, 1)">$params</span>)
                  </span>-&gt;setMethod(<span style="color: rgba(128, 0, 128, 1)">$params</span>)
                  </span>-&gt;<span style="color: rgba(0, 0, 0, 1)">addRoute();
            }
      }
    }
}</span></pre>
</div>
<div>route.php</div>
<div>&nbsp;</div>
<div>
<div class="cnblogs_code">
<pre>&lt;?<span style="color: rgba(0, 0, 0, 1)">php
</span><span style="color: rgba(0, 0, 255, 1)">class</span><span style="color: rgba(0, 0, 0, 1)"> app{
    </span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">function</span> appInit():<span style="color: rgba(0, 0, 0, 1)">self
    {
      </span><span style="color: rgba(0, 0, 255, 1)">if</span>(<span style="color: rgba(0, 128, 128, 1)">glob</span>("./controller/*.php"<span style="color: rgba(0, 0, 0, 1)">)){
            </span><span style="color: rgba(0, 0, 255, 1)">foreach</span>(<span style="color: rgba(0, 128, 128, 1)">glob</span>("./controller/*.php") <span style="color: rgba(0, 0, 255, 1)">as</span> <span style="color: rgba(128, 0, 128, 1)">$fileName</span><span style="color: rgba(0, 0, 0, 1)">){
                </span><span style="color: rgba(0, 0, 255, 1)">require_once</span>(<span style="color: rgba(128, 0, 128, 1)">$fileName</span><span style="color: rgba(0, 0, 0, 1)">);
                </span><span style="color: rgba(128, 0, 128, 1)">$className</span> = <span style="color: rgba(0, 128, 128, 1)">str_replace</span>("./controller/","",<span style="color: rgba(0, 128, 128, 1)">str_replace</span>(".php","",<span style="color: rgba(128, 0, 128, 1)">$fileName</span><span style="color: rgba(0, 0, 0, 1)">));
                route</span>::setRoute(<span style="color: rgba(128, 0, 128, 1)">$className</span><span style="color: rgba(0, 0, 0, 1)">);
                </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">route::$all;exit();</span>
<span style="color: rgba(0, 0, 0, 1)">            }
      }

      </span><span style="color: rgba(0, 0, 255, 1)">return</span> <span style="color: rgba(128, 0, 128, 1)">$this</span><span style="color: rgba(0, 0, 0, 1)">;
    }

    </span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">function</span> run(<span style="color: rgba(128, 0, 128, 1)">$config</span><span style="color: rgba(0, 0, 0, 1)">){
      </span><span style="color: rgba(128, 0, 128, 1)">$controller</span> = <span style="color: rgba(128, 0, 128, 1)">$_GET</span>['c']??<span style="color: rgba(128, 0, 128, 1)">$config</span>['default_controller'<span style="color: rgba(0, 0, 0, 1)">];
      </span><span style="color: rgba(128, 0, 128, 1)">$action</span> = <span style="color: rgba(128, 0, 128, 1)">$_GET</span>['a']??<span style="color: rgba(128, 0, 128, 1)">$config</span>['default_function'<span style="color: rgba(0, 0, 0, 1)">];

      </span><span style="color: rgba(0, 0, 255, 1)">if</span>(<span style="color: rgba(0, 0, 255, 1)">isset</span>(route::<span style="color: rgba(128, 0, 128, 1)">$all</span>[<span style="color: rgba(128, 0, 128, 1)">$controller</span>][<span style="color: rgba(128, 0, 128, 1)">$action</span><span style="color: rgba(0, 0, 0, 1)">])){
            </span><span style="color: rgba(128, 0, 128, 1)">$route</span> = route::<span style="color: rgba(128, 0, 128, 1)">$all</span>[<span style="color: rgba(128, 0, 128, 1)">$controller</span>][<span style="color: rgba(128, 0, 128, 1)">$action</span><span style="color: rgba(0, 0, 0, 1)">];
            </span><span style="color: rgba(128, 0, 128, 1)">$className</span> = <span style="color: rgba(128, 0, 128, 1)">$route</span>-&gt;<span style="color: rgba(0, 0, 0, 1)">controller;
            </span><span style="color: rgba(128, 0, 128, 1)">$function</span> = <span style="color: rgba(128, 0, 128, 1)">$route</span>-&gt;<span style="color: rgba(0, 0, 255, 1)">function</span><span style="color: rgba(0, 0, 0, 1)">;
            (</span><span style="color: rgba(0, 0, 255, 1)">new</span> <span style="color: rgba(128, 0, 128, 1)">$className</span>)-&gt;<span style="color: rgba(128, 0, 128, 1)">$function</span><span style="color: rgba(0, 0, 0, 1)">();
      }</span><span style="color: rgba(0, 0, 255, 1)">else</span><span style="color: rgba(0, 0, 0, 1)">{
            </span><span style="color: rgba(0, 0, 255, 1)">exit</span>("404 Not Found!"<span style="color: rgba(0, 0, 0, 1)">);
      }
    }
}</span></pre>
</div>
<div>init.php</div>
<div>&nbsp;</div>
<div>
<div class="cnblogs_code">
<pre>&lt;?<span style="color: rgba(0, 0, 0, 1)">php
</span><span style="color: rgba(0, 0, 255, 1)">class</span><span style="color: rgba(0, 0, 0, 1)"> indexController
{
    </span><span style="color: rgba(0, 128, 0, 1)">#</span><span style="color: rgba(0, 128, 0, 1)"></span>
    <span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">function</span> index():<span style="color: rgba(0, 0, 0, 1)">void
    {
      </span><span style="color: rgba(0, 0, 255, 1)">echo</span> "This is attribute index controller \r\n"<span style="color: rgba(0, 0, 0, 1)">;
    }

    </span><span style="color: rgba(0, 128, 0, 1)">#</span><span style="color: rgba(0, 128, 0, 1)"></span>
    <span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">function</span> test():<span style="color: rgba(0, 0, 0, 1)">void
    {
      </span><span style="color: rgba(0, 0, 255, 1)">echo</span> "This is attribute test controller \r\n"<span style="color: rgba(0, 0, 0, 1)">;
    }
}</span></pre>
</div>
<div>indexController.php</div>
<div>&nbsp;</div>
<div>
<div class="cnblogs_code">
<pre>&lt;?<span style="color: rgba(0, 0, 0, 1)">php
</span><span style="color: rgba(0, 0, 255, 1)">class</span><span style="color: rgba(0, 0, 0, 1)"> workController
{
    </span><span style="color: rgba(0, 128, 0, 1)">#</span><span style="color: rgba(0, 128, 0, 1)"></span>
    <span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">function</span> work():<span style="color: rgba(0, 0, 0, 1)">void
    {
      </span><span style="color: rgba(0, 0, 255, 1)">echo</span> "This is attribute work controller \r\n"<span style="color: rgba(0, 0, 0, 1)">;
    }
}</span></pre>
</div>
<div>workController.php</div>
<div>&nbsp;</div>
<div>
<div class="cnblogs_code">
<pre>&lt;?<span style="color: rgba(0, 0, 0, 1)">php
</span><span style="color: rgba(128, 0, 128, 1)">$config</span> = <span style="color: rgba(0, 0, 255, 1)">array</span><span style="color: rgba(0, 0, 0, 1)">(
    </span>'default_controller'=&gt;'index',
    'default_function'=&gt;'index',<span style="color: rgba(0, 0, 0, 1)">
);


</span><span style="color: rgba(0, 0, 255, 1)">return</span> <span style="color: rgba(128, 0, 128, 1)">$config</span>;</pre>
</div>
<div>config.php</div>
<div>&nbsp;</div>
<div>
<div class="cnblogs_code">
<pre>&lt;?<span style="color: rgba(0, 0, 0, 1)">php
</span><span style="color: rgba(0, 0, 255, 1)">require_once</span>('./config.php'<span style="color: rgba(0, 0, 0, 1)">);
</span><span style="color: rgba(0, 0, 255, 1)">require_once</span>('./route.php'<span style="color: rgba(0, 0, 0, 1)">);
</span><span style="color: rgba(0, 0, 255, 1)">require_once</span>('./init.php'<span style="color: rgba(0, 0, 0, 1)">);

(</span><span style="color: rgba(0, 0, 255, 1)">new</span> app)-&gt;appInit()-&gt;run(<span style="color: rgba(128, 0, 128, 1)">$config</span>);</pre>
</div>
<div>index.php</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div><br><br>
来源：https://www.cnblogs.com/python-gulp-php/p/16858596.html

查看完整版本: php注解使用示例