1. if elseif else

路由

  1. <?php
  3. # 常用的标签
  4. Route::prefix('mark')->namespace('my')->group(function () {
  5.     # if 语句
  6.     Route::get('1', 'Label@mark1');
  7. });

控制器

  1. <?php
  3. namespace App\Http\Controllers\my;
  5. use App\Http\Controllers\Controller;
  6. use Illuminate\Http\Request;
  7. use Illuminate\Support\Facades\View;
  9. class Label extends Controller
  10. {
  11.     // if 标签
  12.     public function mark1()
  13.     {
  14.         $list = [
  15.             0 => ['name' => '向上', 'age' => 24, 'hobby' => 'cook'],
  16.             1 => ['name' => 'Tom', 'age' => 11, 'hobby' => 'eat'],
  17.             2 => ['name' => 'jerry', 'age' => 24, 'hobby' => 'play with tom']
  18.         ];
  20.         return View::exists('myView.mark1') ? view('myView.mark1')->with('list', $list) : view('myView.404');
  21.     }
  22. }

模板文件

  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4.     <meta charset="UTF-8">
  5.     <meta name="viewport" content="width=device-width, initial-scale=1.0">
  6.     <meta http-equiv="X-UA-Compatible" content="ie=edge">
  7.     <title>if 标签</title>
  8. </head>
  9. <body>
  11.     @if (count($list) === 1)
  12.     我有一条记录！
  13.     @elseif (count($list) > 1)
  14.     我有好多条记录！
  15.     @else
  16.     我没有记录！
  17.     @endif
  19. </body>
  20. </html>

运行结果
image.png

2. switch case

路由

  1. <?php
  3. # 常用的标签
  4. Route::prefix('mark')->namespace('my')->group(function () {
  5.     # switch 语句
  6.     Route::get('2', 'Label@mark2');
  7. });

控制器

  1. <?php
  3. namespace App\Http\Controllers\my;
  5. use App\Http\Controllers\Controller;
  6. use Illuminate\Http\Request;
  7. use Illuminate\Support\Facades\View;
  9. class Label extends Controller
  10. {
  11.     // switch 标签
  12.     public function mark2()
  13.     {
  14.         return View::exists('myView.mark2') ? view('myView.mark2') : view('myView.404');
  15.     }
  16. }

模板文件

  1. @switch(1)
  2.     @case(1)
  3.         First case...
  4.         @break
  6.     @case(2)
  7.         Second case...
  8.         @break
  10.     @default
  11.         Default case...
  12. @endswitch

页面显示
image.png

3. 循环语句

例子

  1. # 常用的标签
  2. Route::prefix('mark')->namespace('my')->group(function () {
  3.     # 循环语句
  4.     Route::get('3', 'Label@mark3');
  5. });

页面显示

  1. <?php
  3. namespace App\Http\Controllers\my;
  5. use App\Http\Controllers\Controller;
  6. use Illuminate\Http\Request;
  7. use Illuminate\Support\Facades\View;
  9. class Label extends Controller
  10. {
  11.     // 循环标签
  12.     public function mark3()
  13.     {
  14.         $users = [
  15.             ['name' => '向上', 'age' => 24, 'hobby' => 'cook'],
  16.             ['name' => 'Tom', 'age' => 11, 'hobby' => 'eat'],
  17.             ['name' => 'jerry', 'age' => 24, 'hobby' => 'play with tom']
  18.         ];
  19.         return View::exists('myView.mark3') ? view('myView.mark3', )->with('users', $users) : view('myView.404');
  20.     }
  21. }

模板文件

  1. @for ($i = 0; $i < 10; $i++)
  2.     The current value is {{ $i }} <br>
  3. @endfor
  5. @foreach ($users as $user)
  6.     <p>name:{{ $user['name'] }} ||  age:{{ $user['age'] }} || hobby:{{ $user['hobby'] }}</p>
  7. @endforeach
  9. @while (false)
  10.     <p>I'm looping forever.</p>
  11. @endwhile

页面效果
image.png