


How to use php+ajax to asynchronously upload files or pictures
这篇文章主要为大家详细介绍了php+ajax实现异步上传文件或图片功能,具有一定的参考价值,感兴趣的小伙伴们可以参考一下
//html代码 <form enctype="multipart/form-data" id="upForm"> <input type="file" name="file" ><br><br> <input type="button" value="提交"> </form> <p class="picDis"> <img src="" alt=""> </p>
//js代码 (':button').click(function(event) { //formdata储存异步上传数据 var formData = new FormData($('form')[0]); formData.append('file',$(':file')[0].files[0]); //坑点: 无论怎么传数据,console.log(formData)都会显示为空,但其实值是存在的,f12查看Net tab可以看到数据被上传了 $.ajax({ url:'formtest.php', type: 'POST', data: formData, //这两个设置项必填 contentType: false, processData: false, success:function(data){ console.log(data) var srcPath = data; console.log(); //注意这里的路径要根据自己的储存文件的路径设置 $('.picDis img').attr('src', '..'+srcPath); } }) });
php:
<?php $upFile = $_FILES['file']; /** * 创建文件夹函数,用于创建保存文件的文件夹 * @param str $dirPath 文件夹名称 * @return str $dirPath 文件夹名称 */ function creaDir($dirPath){ $curPath = dirname(__FILE__); $path = $curPath.'\\'.$dirPath; if (is_dir($path) || mkdir($path,0777,true)) { return $dirPath; } } //判断文件是否为空或者出错 if ($upFile['error']==0 && !empty($upFile)) { $dirpath = creaDir('upload'); $filename = $_FILES['file']['name']; $queryPath = './'.$dirpath.'/'.$filename; //move_uploaded_file将浏览器缓存file转移到服务器文件夹 if(move_uploaded_file($_FILES['file']['tmp_name'],$queryPath)){ echo $queryPath; } } ?>
点击上传图片并发送后, 可以看到页面上显示出图片, 查看本地文件夹可以看到文件也已储存到服务器.
在客户端实现异步上传的关键在于FormData,关于这部分这里有详细介绍: FormData()
以上就是本文的全部内容,希望对大家的学习有所帮助。
相关推荐:
The above is the detailed content of How to use php+ajax to asynchronously upload files or pictures. For more information, please follow other related articles on the PHP Chinese website!

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics



In this chapter, we will understand the Environment Variables, General Configuration, Database Configuration and Email Configuration in CakePHP.

PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

To work with date and time in cakephp4, we are going to make use of the available FrozenTime class.

Working with database in CakePHP is very easy. We will understand the CRUD (Create, Read, Update, Delete) operations in this chapter.

To work on file upload we are going to use the form helper. Here, is an example for file upload.

In this chapter, we are going to learn the following topics related to routing ?

CakePHP is an open-source framework for PHP. It is intended to make developing, deploying and maintaining applications much easier. CakePHP is based on a MVC-like architecture that is both powerful and easy to grasp. Models, Views, and Controllers gu

Validator can be created by adding the following two lines in the controller.
