Laravel实现Facades效能

　　使用过Laravel的同学都知道Facades 的强大，下面就让我们一起创建一个Facades 实例。如有不正确的地方，还请不吝赐教。

　　1. 实现Laravel的自动加载功能

　　首先建立目录app/lib/Myapp，然后添加目录到composer.json中　　

<span style="color: #008080;">1</span> "autoload":<span style="color: #000000;"> {        </span><span style="color: #008080;">2</span>     "psr-0":<span style="color: #000000;">{</span><span style="color: #008080;">3</span>         "Myapp":"app/lib"<span style="color: #008080;">4</span> <span style="color: #000000;">    }</span><span style="color: #008080;">5</span> }    

　　2. 实现功能类

　　实现能能类 app/lib/Myapp/Test.php　　

<span style="color: #008080;"> 1</span> <!--?<span style="color: #000000;"-->php<span style="color: #008080;"> 2</span> <span style="color: #008000;">/*</span><span style="color: #008000;">*</span><span style="color: #008080;"> 3</span> <span style="color: #008000;"> * @author brudeke</span><span style="color: #008080;"> 4</span>  <span style="color: #008000;">*/</span><span style="color: #008080;"> 5</span> <span style="color: #000000;">namespace Myapp;</span><span style="color: #008080;"> 6</span> <span style="color: #0000ff;">class</span><span style="color: #000000;"> Test{</span><span style="color: #008080;"> 7</span>     <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span> <span style="color: #0000ff;">do</span><span style="color: #000000;">(){</span><span style="color: #008080;"> 8</span>         <span style="color: #0000ff;">echo</span> 'this is a class'<span style="color: #000000;">;</span><span style="color: #008080;"> 9</span> <span style="color: #000000;">    }</span><span style="color: #008080;">10</span> }

　　3. 实现ServiceProvider

　　实现app/lib/Myapp/TestServiceProvider.php ，该类主要是将功能类添加到Ioc容器:　　

<!--?<span style="color: #000000;"-->php<span style="color: #008000;">/*</span><span style="color: #008000;">* * @author brudeke </span><span style="color: #008000;">*/</span><span style="color: #000000;">namespace Myapp;</span><span style="color: #0000ff;">use</span><span style="color: #000000;"> Illuminate\Support\ServiceProvider;</span><span style="color: #0000ff;">class</span> TestServiceProvider <span style="color: #0000ff;">extends</span><span style="color: #000000;"> ServiceProvider{    </span><span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span><span style="color: #000000;"> register()  {        </span><span style="color: #800080;">$this</span>->app['test'] = <span style="color: #800080;">$this</span>->app-><span style="color: #000000;">share(            </span><span style="color: #0000ff;">function</span> (<span style="color: #800080;">$app</span><span style="color: #000000;">) {                </span><span style="color: #0000ff;">return</span> <span style="color: #0000ff;">new</span><span style="color: #000000;"> \Myapp\Test();        });    }}</span>

　　4. 实现Facade 实例

　　实现app/lib/Myapp/Facades/TestFacades.php， 该类的主要美化，实现成员函数类似静态方法的调用形式　　

<span style="color: #008080;"> 1</span> <!--?<span style="color: #000000;"-->php<span style="color: #008080;"> 2</span> <span style="color: #008000;">/*</span><span style="color: #008000;">*</span><span style="color: #008080;"> 3</span> <span style="color: #008000;"> * @author brudeke</span><span style="color: #008080;"> 4</span>  <span style="color: #008000;">*/</span><span style="color: #008080;"> 5</span> <span style="color: #000000;">namespace Myapp\Facades;</span><span style="color: #008080;"> 6</span> <span style="color: #008080;"> 7</span> <span style="color: #0000ff;">use</span><span style="color: #000000;"> Illuminate\Support\Facades\Facade;</span><span style="color: #008080;"> 8</span> <span style="color: #008080;"> 9</span> <span style="color: #0000ff;">class</span>  TestFacades <span style="color: #0000ff;">extends</span><span style="color: #000000;"> Facade{</span><span style="color: #008080;">10</span>     <span style="color: #0000ff;">protected</span> <span style="color: #0000ff;">static</span> <span style="color: #0000ff;">function</span><span style="color: #000000;"> getFacadeAccessor()</span><span style="color: #008080;">11</span> <span style="color: #000000;">    {</span><span style="color: #008080;">12</span>         <span style="color: #0000ff;">return</span> 'test'<span style="color: #000000;">;</span><span style="color: #008080;">13</span> <span style="color: #000000;">    }</span><span style="color: #008080;">14</span> }

　　5. 加载ServiceProvider

　　在app/config/app.php 中的providers中添加如下配置：　　

<span style="color: #008080;">1</span> 'providers' => <span style="color: #0000ff;">array</span><span style="color: #000000;">(   </span><span style="color: #008080;">2</span> 　　'Myapp\TestServiceProvider'<span style="color: #008080;">3</span> ),

　　在app/config/app.php 中的aliases中添加别名：　　

<span style="color: #008080;">1</span> 'aliases' => <span style="color: #0000ff;">array</span><span style="color: #000000;">(</span><span style="color: #008080;">2</span>     'TestClass'            =>  'Myapp\Facades\TestFacades',<span style="color: #008080;">3</span> ),

　　接下来就可以在项目中以TestClass::do()的形式使用该功能类了。

1楼brudeke

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