如何在Laravel中訪問公共目錄？

---

要從公共目錄獲取檔案列表，可以使用**File外觀類**。要使用它，你需要使用以下語句包含**File**類：

use Illuminate\Support\Facades\File;

假設公共資料夾中包含以下檔案：

示例1

以下程式嘗試從**public_folder**檢索所有影像：

<?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);
   }
}

輸出

以上程式碼的輸出如下：

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

要從public_folder獲取所有CSS檔案，你只需要將字串'**css**'傳遞給**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);
   }
}

輸出

以上程式碼的輸出為：

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

要從公共資料夾獲取所有檔案，程式碼如下：

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

**<$files>**變數是一個數組，包含public/資料夾中所有檔案的詳細資訊。

<?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);
   }
}

輸出

以上程式碼的輸出為：

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()**來獲取public/images資料夾中的所有檔案。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);
   }
}

輸出

以上程式碼的輸出為：

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