Codeigniter 4 基础教程（5）-- 文件上传小例子

本节将讲解如何上传文件
0.uploadPost.php
app/Views/uploadPost.php

<form method="post" action="" enctype="multipart/form-data">
	<input type="text" name="title" required>
	<input type="file" name="banner" required>
	<input type="submit" name="" value="Send">
	
</form>

1.Dashboard.php里面的uploadPost

<?php namespace App\Controllers;

use CodeIgniter\Controller;
use App\Models\UsersModel;
use App\Models\PostsModel;

class Dashboard extends BaseController
{
    
    
	public function index()
	{
    
    

		$model = new PostsModel();
		$model->insert([
			"banner"=>'img1.png',
			"title"=>"My first post",
			"intro"=>"Hello this is me",
			"content"=>"Lorem ispsum bababa",
			"category"=>"1",
			"tages"=>"sports",
			"created_at"=>date("Y-m-d"),
			"created_by"=>"1"
			]);
	}

	public function uploadPost()
	{
    
    
		if($_POST){
    
    
			$file = $this->request->getFile("banner");
			$filename = $file->getRandomName();
			if($file->isValid()){
    
    
				$file->move(WRITEPATH.'uploads',$filename);
			}else{
    
    
				echo 'NOT valid';
			}
		}
		echo view('uploadPost');
	}

}

里面的一个解释点在于WRITEPATH是Codeigniter 4自定义的一个文件夹，然后所有文件都导入到这里。操作成功后，app/writable/下会出现对应的文件。
没有多少演示的部分，大家可以试试。