Laravel 实现 Facades 功能，laravelfacades
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>1</span> "autoload":<span> {
</span><span>2</span> "psr-0":<span>{
</span><span>3</span> "Myapp":"app/lib"
<span>4</span> <span> }
</span><span>5</span> }
2. 实现功能类
实现能能类 app/lib/Myapp/Test.php
<span> 1</span> <?<span>php
</span><span> 2</span> <span>/*</span><span>*
</span><span> 3</span> <span> * @author brudeke
</span><span> 4</span> <span>*/</span>
<span> 5</span> <span>namespace Myapp;
</span><span> 6</span> <span>class</span><span> Test{
</span><span> 7</span> <span>public</span> <span>function</span> <span>do</span><span>(){
</span><span> 8</span> <span>echo</span> 'this is a class'<span>;
</span><span> 9</span> <span> }
</span><span>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>php
</span><span>/*</span><span>*
* @author brudeke
</span><span>*/</span><span>
namespace Myapp;
</span><span>use</span><span> Illuminate\Support\ServiceProvider;
</span><span>class</span> TestServiceProvider <span>extends</span><span> ServiceProvider{
</span><span>public</span> <span>function</span><span> register() {
</span><span>$this</span>->app['test'] = <span>$this</span>->app-><span>share(
</span><span>function</span> (<span>$app</span><span>) {
</span><span>return</span> <span>new</span><span> \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> 1</span> <?<span>php
</span><span> 2</span> <span>/*</span><span>*
</span><span> 3</span> <span> * @author brudeke
</span><span> 4</span> <span>*/</span>
<span> 5</span> <span>namespace Myapp\Facades;
</span><span> 6</span>
<span> 7</span> <span>use</span><span> Illuminate\Support\Facades\Facade;
</span><span> 8</span>
<span> 9</span> <span>class</span> TestFacades <span>extends</span><span> Facade{
</span><span>10</span> <span>protected</span> <span>static</span> <span>function</span><span> getFacadeAccessor()
</span><span>11</span> <span> {
</span><span>12</span> <span>return</span> 'test'<span>;
</span><span>13</span> <span> }
</span><span>14</span> }
5. 加载ServiceProvider
在app/config/app.php 中的providers中添加如下配置：
<span>1</span> 'providers' => <span>array</span><span>( </span><span>2</span> 'Myapp\TestServiceProvider' <span>3</span> ),
在app/config/app.php 中的aliases中添加别名：
<span>1</span> 'aliases' => <span>array</span><span>( </span><span>2</span> 'TestClass' => 'Myapp\Facades\TestFacades', <span>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。
