Home Backend Development PHP Tutorial PHP文件上传原理简单分析_PHP

PHP文件上传原理简单分析_PHP

Jun 01, 2016 pm 12:16 PM
upload

//表单上传只能使用multipart/form-data编码格式
$_FILES系统函数;
$_FILES['myFile']['name']文件名称
$_FILES['myFile']['type']文件的类型,服务端进行限制
image/**
image/x-png
application/x-zip-compressed
$_FILES['myFile']['size']上传文件大小
$_FILES['myFile']['tmp_name']上传服务后保存临时文件名
$_FILES['myFile']['error']错误代码;
0成功1超过php.ini大小2超过MAX_FILE_SIZE选项指定的值
3只有部分上传 5上传文件大小为0

move_uploaded_file(临时文件,目标位置和文件名);
上传后移动文件到目标位置的函数
is_uploaded_file(MIME);
判断上传MIME类型的文件函数
复制代码 代码如下:




if(is_uploaded_file($_FILES['myFile']['tmp_name'])){
$upfile = $_FILES['upload'];
$name = $upfile['name'];
$type = $upfile['type'];
$size = $upfile['size'];
$tmp_name = $upfile['tmp_name'];
$error = $upfile['error'];
switch($type){
case 'image/pjpeg' : $ok=1;
break
}
if($ok){
move_uploaded_file($tmp_name,'up/'.$name);
}else{
echo "文件类型不允许";
}
}
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
1 months ago By 尊渡假赌尊渡假赌尊渡假赌
Two Point Museum: All Exhibits And Where To Find Them
1 months ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

How to implement file upload and processing in FastAPI How to implement file upload and processing in FastAPI Jul 28, 2023 pm 03:01 PM

How to implement file upload and processing in FastAPI FastAPI is a modern, high-performance web framework that is easy to use and powerful. It provides native support for file upload and processing. In this article, we will learn how to implement file upload and processing functions in the FastAPI framework, and provide code examples to illustrate specific implementation steps. First, we need to import the required libraries and modules: fromfastapiimportFastAPI,UploadF

Simple steps to upload your own music on Kugou Simple steps to upload your own music on Kugou Mar 25, 2024 pm 10:56 PM

1. Open Kugou Music and click on your profile picture. 2. Click the settings icon in the upper right corner. 3. Click [Upload Music Works]. 4. Click [Upload Works]. 5. Select the song and click [Next]. 6. Finally, click [Upload].

How to upload lyrics to QQ Music How to upload lyrics to QQ Music Feb 23, 2024 pm 11:45 PM

With the advent of the digital age, music platforms have become one of the main ways for people to obtain music. However, sometimes when we listen to songs, we find that there are no lyrics, which is very disturbing. Many people hope that lyrics can be displayed when listening to songs to better understand the content and emotions of the songs. QQ Music, as one of the largest music platforms in China, also provides users with the function of uploading lyrics, so that users can better enjoy music and feel the connotation of the songs. The following will introduce how to upload lyrics on QQ Music. first

How to solve the problem of slow upload speed on Win10 computer How to solve the problem of slow upload speed on Win10 computer Jul 01, 2023 am 11:25 AM

How to solve the slow upload speed of Win10 computer? When we use the computer, we may feel that the file upload speed of our computer is very slow. So what is the situation? In fact, this is because the default upload speed of the computer is 20%, so the upload speed is very slow. Many friends do not know how to operate in detail. The editor has compiled the steps to format the C drive in Win11 below. If you are interested, follow Let’s take a look below! Solution to the slow upload speed of Win10 1. Press win+R to call up run, enter gpedit.msc, and press Enter. 2. Select the management template, click Network--Qos Packet Scheduler, and double-click Limit to reserve bandwidth. 3. Select Enabled, which will bring

How to improve computer upload speed How to improve computer upload speed Jan 15, 2024 pm 06:51 PM

Upload speed becomes very slow? I believe this is a problem that many friends will encounter when uploading things on their computers. If the network is unstable when using a computer to transfer files, the upload speed will be very slow. So how can I increase the network upload speed? Below, the editor will tell you how to solve the problem of slow computer upload speed. When it comes to network speed, we all know that the speed of opening web pages, download speed, and upload speed are also very critical. Especially some users often need to upload files to the network disk, so a fast upload speed will undoubtedly save you a lot of money. Less time, what should I do if the upload speed is slow? Below, the editor brings you pictures and texts on how to deal with slow computer upload speeds. How to solve the problem of slow computer upload speed? Click "Start--Run" or "Window key"

How to take photos and upload them on computer How to take photos and upload them on computer Jan 16, 2024 am 10:45 AM

As long as the computer is equipped with a camera, it can take pictures, but some users still don't know how to take pictures and upload them. Now I will give you a detailed introduction to the method of taking pictures on the computer, so that users can upload the pictures wherever they want. How to take photos and upload them on a computer 1. Mac computer 1. Open Finder and click the application on the left. 2. After opening, click the Camera application. 3. Just click the photo button below. 2. Windows computer 1. Open the search box below and enter camera. 2. Then open the searched application. 3. Click the photo button next to it.

How to implement video playback and upload functions through the PHP Kuaishou API interface How to implement video playback and upload functions through the PHP Kuaishou API interface Jul 21, 2023 pm 04:37 PM

How to implement video playback and upload functions through the PHP Kuaishou API interface. Introduction: With the rise of social media, the public’s demand for video content has gradually increased. Kuaishou, as a short video-themed social application, is loved by many users. This article will introduce how to use PHP to write code to implement video playback and upload functions through the Kuaishou API interface. 1. Obtain the access token. Before using the Kuaishou API interface, you first need to obtain the access token. Token is the identity for accessing the API interface

How to implement avatar upload function in Vue How to implement avatar upload function in Vue Nov 07, 2023 am 08:01 AM

Vue is a popular front-end framework that can be used to build highly interactive applications. During the development process, uploading avatars is one of the common requirements. Therefore, in this article, we will introduce how to implement the avatar upload function in Vue and provide specific code examples. Using a third-party library In order to implement the avatar upload function, we can use a third-party library, such as vue-upload-component. This library provides an upload component that can be easily integrated into Vue applications. Here is a simple example

See all articles