如何在Laravel中访问公共目录？

---

要从公共目录获取文件列表，可以使用**File外观类**。要使用它，你需要使用以下语句包含**File**类：

use Illuminate\Support\Facades\File;

假设公共文件夹中包含以下文件：

示例1

以下程序尝试从**public_folder**检索所有图像：

<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\Models\User;
use Illuminate\Support\Facades\Storage;

class UserController extends Controller {
   public function index() {
      $images = \File::allFiles(public_path('images'));
      print_r($images);
   }
}

输出

以上代码的输出如下：

Array (
   [0] => Symfony\Component\Finder\SplFileInfo Object (
      [relativePath:Symfony\Component\Finder\SplFileInfo:private] =>
      [relativePathname:Symfony\Component\Finder\SplFileInfo:private] => flower.jpg
      [pathName:SplFileInfo:private] => C:\xampp\htdocs\laraveltest\public\images\flower.jpg
      [fileName:SplFileInfo:private] => flower.jpg
   )
)

示例2

要从public_folder获取所有CSS文件，你只需要将字符串'**css**'传递给**public_path()**方法。

<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\Models\User;

class UserController extends Controller {
   public function index() {
      $css_files = \File::allFiles(public_path('css'));
      print_r($css_files);
   }
}

输出

以上代码的输出为：

Array (
   [0] => Symfony\Component\Finder\SplFileInfo Object (
      [relativePath:Symfony\Component\Finder\SplFileInfo:private] =>
      [relativePathname:Symfony\Component\Finder\SplFileInfo:private] => test.css
      [pathName:SplFileInfo:private] => C:\xampp\htdocs\laraveltest\public\css\test.css
      [fileName:SplFileInfo:private] => test.css
   )
)

示例3

要从公共文件夹获取所有文件，代码如下：

$path = public_path();
$files = File::allFiles($path);

**<$files>**变量是一个数组，包含public/文件夹中所有文件的详细信息。

<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\File;

class UserController extends Controller {
   public function index() {
      $path = public_path();
      $files = File::allFiles($path);
      print_r($files);
   }
}

输出

以上代码的输出为：

Array(
   [0] => Symfony\Component\Finder\SplFileInfo Object(
      [relativePath:Symfony\Component\Finder\SplFileInfo:private] => css
      [relativePathname:Symfony\Component\Finder\SplFileInfo:private] => css\test.css
      [pathName:SplFileInfo:private] => C:\xampp\htdocs\laraveltest\public\css\test.css
      [fileName:SplFileInfo:private] => test.css
   )
   
   [1] => Symfony\Component\Finder\SplFileInfo Object(
      [relativePath:Symfony\Component\Finder\SplFileInfo:private] =>
      [relativePathname:Symfony\Component\Finder\SplFileInfo:private] => favicon.ico
      [pathName:SplFileInfo:private] => C:\xampp\htdocs\laraveltest\public\favicon.ico
      [fileName:SplFileInfo:private] => favicon.ico
   )
  
  [2] => Symfony\Component\Finder\SplFileInfo Object(
      [relativePath:Symfony\Component\Finder\SplFileInfo:private] => images
      [relativePathname:Symfony\Component\Finder\SplFileInfo:private] => images\flower.jpg
      [pathName:SplFileInfo:private] => C:\xampp\htdocs\laraveltest\public\images\flower.jpg
      [fileName:SplFileInfo:private] => flower.jpg
   )

   [3] => Symfony\Component\Finder\SplFileInfo Object(
      [relativePath:Symfony\Component\Finder\SplFileInfo:private] =>
      [relativePathname:Symfony\Component\Finder\SplFileInfo:private] => index.php
      [pathName:SplFileInfo:private] => C:\xampp\htdocs\laraveltest\public\index.php
      [fileName:SplFileInfo:private] => index.php
   )

   [4] => Symfony\Component\Finder\SplFileInfo Object(
      [relativePath:Symfony\Component\Finder\SplFileInfo:private] =>
      [relativePathname:Symfony\Component\Finder\SplFileInfo:private] => robots.txt
      [pathName:SplFileInfo:private] => C:\xampp\htdocs\laraveltest\public\robots.txt
      [fileName:SplFileInfo:private] => robots.txt
   )
)

示例4

你可以使用**scandir()**来获取public/images文件夹中的所有文件。操作方法如下：

<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;

class UserController extends Controller {
   public function index() {
      $path = public_path('images');
      $files = scandir($path);
      print_r($files);
   }
}

输出

以上代码的输出为：

Array
(
   [0] => .
   [1] => ..
   [2] => flower.jpg
)