两种php实现图片上传的方法，
两种php实现图片上传的方法，
图片上传在项目中经常用到，几乎没有任何一个项目可以脱离图片或者是文件上传。本篇我在这向大家介绍两种常规的上传方式。（注：在这里我们仅仅是对功能的实现，不去做过多的前端的样式）
一、利用form表单上传
此种方式是最原始的上传方式，前端就是简单的form表单，后端我们有PHP处理传输过来的文件。
首先看前端的代码 upload.html
<form action="handle.php" name="form" method="post" enctype="multipart/form-data"> <input type="file" name="file" /> <input type="submit" name="submit" value="上传" /> </form>
然后新建php文件 handle.php 代码如下
$file = $_FILES['file'];//得到传输的数据
//得到文件名称
$name = $file['name'];
$type = strtolower(substr($name,strrpos($name,'.')+1)); //得到文件类型，并且都转化成小写
$allow_type = array('jpg','jpeg','gif','png'); //定义允许上传的类型
//判断文件类型是否被允许上传
if(!in_array($type, $allow_type)){
//如果不被允许，则直接停止程序运行
return ;
}
//判断是否是通过HTTP POST上传的
if(!is_uploaded_file($file['tmp_name'])){
//如果不是通过HTTP POST上传的
return ;
}
$upload_path = "D:/now/"; //上传文件的存放路径
//开始移动文件到相应的文件夹
if(move_uploaded_file($file['tmp_name'],$upload_path.$file['name'])){
echo "Successfully!";
}else{
echo "Failed!";
}
当然，此php处理代码不是很完善，其中对错误的情况没有进行处理，然而使用php处理上传文件的原理就是这样的，大家可以在此基础上进行优化，使其更加完善。
二、利用uploadify实现无刷新并且带进度条的上传
首先下载uploadify插件，保存在项目中的某个文件夹下面，然后引入三个文件
<link href="js/uploadify/uploadify.css" rel="stylesheet" type="text/css" /> <script type="text/javascript" src="js/uploadify/jquery.min.1.7.js"></script> <script type="text/javascript" src=js/uploadify/jquery.uploadify.min.js"></script>
然后引用以下代码
<script type="text/javascript">
$(function(){
$(".uploadbutton").each(function(){
bidtype="上传";
$(this).uploadify({
swf: 'js/uploadify/uploadify.swf',
uploader: "handle.php", //处理上传的php文件或者方法
multi: true, //是否开启一次性上传多个文件
queueSizeLimit:20, //最大允许上传的文件数量
buttonText: bidtype, //按钮文字
height: 34, //按钮高度
width: 82, //按钮宽度
auto:false, //选择完图片以后是否自动上传
method:'post',
fileTypeExts: "*.jpg;*.png;*.gif;*.jpeg;", //允许的文件类型
fileTypeDesc: "请选择图片文件", //文件说明
postData:{},
formData: { "imgType": "normal","timestamp":"asdfsa","token":"48f262516b3912a060d21ef6af564668" }, //提交给服务器端的参数
onUploadSuccess: function (file, data, response) { //一个文件上传成功后的响应事件处理
var data = $.parseJSON(data);
}
});
})
});
</script>
<body>
<span id="commercial_upload" class="uploadbutton"></span>
</body>
样式如下
当然此按钮的样式我改动过，大家可以根据自己的需要修改样式文件，改变此按钮的样式
同样的php代码 handle.php
$file = $_FILES['Filedata'];//得到传输的数据
//得到文件名称
$name = $file['name'];
$type = strtolower(substr($name,strrpos($name,'.')+1)); //得到文件类型，并且都转化成小写
$allow_type = array('jpg','jpeg','gif','png'); //定义允许上传的类型
//判断文件类型是否被允许上传
if(!in_array($type, $allow_type)){
//如果不被允许，则直接停止程序运行
return ;
}
//判断是否是通过HTTP POST上传的
if(!is_uploaded_file($file['tmp_name'])){
//如果不是通过HTTP POST上传的
return ;
}
$upload_path = "D:/now/"; //上传文件的存放路径
//开始移动文件到相应的文件夹
if(move_uploaded_file($file['tmp_name'],$upload_path.$file['name'])){
echo "Successfully!";
}else{
echo "Failed!";
}
以上两种方式上传可以说PHP处理的原理是相同的，只是前台显示的样式不同，第二种方式是无刷新，并且带有返回值，可以方便我们做其它的处理。虽然常用，但是总归会受限制，使用起来不是很灵活。
随着html5的发展的越来越成熟，我们可以利用h5中的一些方法实现上传功能，此时后台PHP的处理代码完全不同于以上两种方式，并且使用起来很灵活。由于篇幅限制，本篇我不向大家介绍这种方式，有兴趣的可以参考php+html5实现无刷新图片上传教程，希望大家会喜欢。
您可能感兴趣的文章:
- PHP图片上传类带图片显示
- 简单的PHP图片上传程序
- php 图片上传类代码
- php图片上传存储源码并且可以预览
- PHP 图片上传代码
- PHP支持多种格式图片上传(支持jpg、png、gif)
- thinkphp实现图片上传功能分享
- 使用ThinkPHP+Uploadify实现图片上传功能
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
1377
52
PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian
Dec 24, 2024 pm 04:42 PM
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
CakePHP Date and Time
Sep 10, 2024 pm 05:27 PM
To work with date and time in cakephp4, we are going to make use of the available FrozenTime class.
Discuss CakePHP
Sep 10, 2024 pm 05:28 PM
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
CakePHP File upload
Sep 10, 2024 pm 05:27 PM
To work on file upload we are going to use the form helper. Here, is an example for file upload.
CakePHP Creating Validators
Sep 10, 2024 pm 05:26 PM
Validator can be created by adding the following two lines in the controller.
CakePHP Logging
Sep 10, 2024 pm 05:26 PM
Logging in CakePHP is a very easy task. You just have to use one function. You can log errors, exceptions, user activities, action taken by users, for any background process like cronjob. Logging data in CakePHP is easy. The log() function is provide
How To Set Up Visual Studio Code (VS Code) for PHP Development
Dec 20, 2024 am 11:31 AM
Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c
CakePHP Quick Guide
Sep 10, 2024 pm 05:27 PM
CakePHP is an open source MVC framework. It makes developing, deploying and maintaining applications much easier. CakePHP has a number of libraries to reduce the overload of most common tasks.
