laravel: learn what remember what the blind in mind

• Template Engine Blade
• Illuminate position wherevendor/laravel/framework/src/Illuminate
• PHP 5.5 onwards, keyword class can also be used to resolve the class name. Use ClassName :: class you can get a string containing the fully qualified name of the class ClassName. This is especially useful for use namespaces classes.

  <?php
  namespace NS {
      class ClassName {
      }
      
      echo ClassName::class;
  }
  ?>
  输出：NS\ClassName