Laravel中的模板引擎Blade

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>模板继承@yield('title')</title>
    <style>
        .header{
             1000px;
            height:150px;
            margin: 0 auto;
            background: #f5f5f5;
            border: 1px solid #dddddd;
        }
        .main{
             1000px;
            height:300px;
            margin: 0 auto;
            margin-top: 15px;
            clear:both;
        }
        .main .sidebar{
            float:left;
            20%;
            height:inherit;
            background: #f5f5f5;
            border:1px solid #ddd;
        }
        .main .content{
            float: right;
             75%;
            height: inherit;
            background: #f5f5f5;
            border:1px solid #ddd;
        }
        .footer{
            1000px;
            height:150px;
            margin: 0 auto;
            margin-top:15px;
            background: #f5f5f5;
            border:1px solid #ddd;
        }
    </style>
</head>
<body>
<div class="header">
    @section('header')
    头部
    @show
</div>
<div class="main">
    <div class="sidebar">
        <!--section是用来定义一个视图片段的-->
        @section('sidebar')
        侧边栏
        @show
    </div>
    <div class="content">
        <!--yield表示某个指定section所要显示的内容，可以想象成一个占位符-->
        @yield('content','主要内容区域')
    </div>
</div>
<div class="footer">
    @section('footer')
    底部
    @show
</div>
</body>
</html>

@extends('layouts')

@section('header')
    @parent
    header
@stop

@section('sidebar')
    sidebar
@stop

@section('content')
    content
    <!--模板中输出PHP变量-->
    <p>{{$name}}</p>

    <!--模板中调用php代码-->
    <p>{{time()}}</p>
    <p>{{date('Y-m-d H:i:s',time())}}</p>
    <p>{{in_array($name,$arr)?'true':'false'}}</p>
    <p>{{var_dump($arr)}}</p>
    <p>{{isset($name)?$name:'default'}}</p>
    <p>{{$name or 'default'}}</p>

    <!--原样输出-->
    <p>@{{ $name }}</p>

    <!--模板中的注释-->

    <!--引入子视图include-->
    @include('user.common1',['message'=>'这里是错误信息'])

    <!--流程控制-->
    @if($name=='yxh')
        I'm yxh
    @elseif($name=='imooc')
        I'm imooc
    @else
        who am I?
    @endif

    @if(in_array($name,$arr))
        true
    @else
        false
    @endif

    @unless($name!='yxh')
        I'm yxh;
    @endunless

    @for($i=0;$i<3;$i++)
        {{$i}}
    @endfor

    {{--@foreach($user as $user)--}}
        {{--{{$user->username}}--}}
    {{--@endforeach--}}

    @forelse($user as $user)
        {{$user->username}}
    @empty
        null
    @endforelse

    <a href="{{url('url')}}">url()</a>
    <a href="{{action('UserController@urlTest')}}">action()</a>
    <a href="{{route('url')}}">route()</a>

@stop

<p>这里是include{{$message}}</p>

    public function section1(){
        $name = 'yxh';
        $arr = ['yxh','imooc'];
        $user = Admin::get();
        return view('user.section1',[
            'name'=>$name,
            'arr' =>$arr,
            'user'=>$user
        ]);
    }

    public function urlTest(){
        return 'urlTest';
    }