分析（直接实践是最好的。。。。。）：
一、Ningx 上传（
1.安装Nginx 的模块文件(upload):https://www.nginx.com/resources/wiki/modules/upload/，默认Nginx 肯定是没安装这个扩展模块的，你可以准备删除Nginx重新去官网下载一个最新稳定版本，并且进行编译吧。。。。。。
# Upload form should be submitted to this location
location /upload {
# Pass altered request body to this location
upload_pass /upload.php;
# Store files to this directory
# The directory is hashed, subdirectories 0 1 2 3 4 5 6 7 8 9 should exist
这里是扔到10个文件夹里去
upload_store /usr/share/nginx/html/file 1;
# Allow uploaded files to be read only by user
upload_store_access user:r;
就是在这里，他会自动给你命名。
# Set specified fields in request body
upload_set_form_field "${upload_field_name}_name" $upload_file_name;
upload_set_form_field "${upload_field_name}_content_type" $upload_content_type;
upload_set_form_field "${upload_field_name}_path" $upload_tmp_path;
# Inform backend about hash and size of a file
upload_aggregate_form_field "${upload_field_name}_md5" $upload_file_md5;
upload_aggregate_form_field "${upload_field_name}_size" $upload_file_size;
upload_pass_form_field "^submit$|^description$";
}
这里是个大坑，因为如果默认就是当前的服务器的80端口，配置这个是会出错的，我就直接没用代理，直接
upload_pass /upload.php;
#如果是当前端口，设置proxy_pass会出现错误
# Pass altered request body to a backend
#location @test {
# proxy_pass htpp://127.0.0.1;
#}
2.Nginx的某个路由（看我下面的配置文件）检测到上传请求后，会分别将各个你定义的form file name，上传到不同的文件夹，一共是10个（创建10个文件夹，命名0 1 2 3 ...），文件位置自定义（但一定要包含那10个文件夹，这个切记），一定要检测你创建的文件夹Nginx是否具有写入权限，这个可以自己看log（这个相当重要），如果你配置完成后想玩点新花样，可以自己玩玩，还可以限制上传速度之类的，而且可以做转发，如果你配置的代理服务器本身就做了URL反向代理，那肯定可以转发上传文件到多个Nginx服务器（上传文件提交信息，比如文件位置在哪儿之类的。）去滴。。。
二、直接PHP上传
PHP上传文件，本身就要配置Nginx 模块，所以很多人会搞混，其实两者是有差异的，
正常的上传流程：html 提交上传文件，nginx 收到后 扔到tmp目录，PHP收到后，把TMP的上传文件扔到自己想放的文件夹。
-------------------------------------------------------------------
两者都需要编写HTML，直接提交给Nginx ，在Upload Modules 配置好了，是可以直接接受多个文件上传的。
<!-- 这是提交给nginx -->
<html lang="CN">
<head>
<meta charset="UTF-8">
<title>Test upload</title>
</head>
<body>
<h2>Select files to upload</h2>
<form enctype="multipart/form-data" action="/upload" method="post">
<input type="file" name="file"><br>
<input type="file" name="file1"><br>
<input type="file" name="file2"><br>
<input type="submit" name="submit" value="Upload">
<input type="hidden" name="test" value="value">
</form>
</body>
</html>
<!-- 这是直接提交给php -->
<html lang="CN">
<head>
<meta charset="UTF-8">
<title>Test upload</title>
</head>
<body>
<h2>Select files to upload</h2>
<form enctype="multipart/form-data" action="/upload.php" method="post">
<input type="file" name="file"><br>
<input type="submit" name="submit" value="Upload">
<input type="hidden" name="test" value="value">
</form>
</body>
</html>
1：通过配置Ningx 安装 Upload Modules 进行 文件上传 再从PHP 接受 Ningx POST过来的参数。
2.直接通过编写PHP，从HTML 负责文件上传
server {
listen 80;
server_name localhost;
charset utf-8;
access_log /usr/local/nginx/logs/access.log main;
client_max_body_size 100m;
# Upload form should be submitted to this location
location /upload {
# Pass altered request body to this location
upload_pass /upload.php;
# Store files to this directory
# The directory is hashed, subdirectories 0 1 2 3 4 5 6 7 8 9 should exist
upload_store /usr/share/nginx/html/file 1;
# Allow uploaded files to be read only by user
upload_store_access user:r;
# Set specified fields in request body
upload_set_form_field "${upload_field_name}_name" $upload_file_name;
upload_set_form_field "${upload_field_name}_content_type" $upload_content_type;
upload_set_form_field "${upload_field_name}_path" $upload_tmp_path;
# Inform backend about hash and size of a file
upload_aggregate_form_field "${upload_field_name}_md5" $upload_file_md5;
upload_aggregate_form_field "${upload_field_name}_size" $upload_file_size;
upload_pass_form_field "^submit$|^description$";
}
#如果是当前端口，设置proxy_pass会出现错误
# Pass altered request body to a backend
#location @test {
# proxy_pass htpp://127.0.0.1;
#}
location / {
root /usr/share/nginx/html/work/public;
index index.html index.htm index.php;
}
error_page 404 /404.html;
# redirect server error pages to the static page /50x.html
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root /usr/share/nginx/html;
}
location ~ \.php$ {
root /usr/share/nginx/html/work/public;
fastcgi_pass unix:/opt/remi/php70/root/run/lock/php-fcgi.sock;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
include fastcgi_params;
}
location ~ .*＼.(gif|jpg|jpeg|png|bmp|swf)$
{
expires 15d;
}
location ~ .*＼.(js|css)?$
{
expires 1d;
}
}
自己感受~~~~~
然后贴上Demo PHP 代码：
<?php
header('Content-Type: text/html;charset=UTF-8');
//文件后缀=>文件类型
$type = ['.pdf' => 'application/pdf'];
const FILE_DIR = '/usr/share/nginx/html/work/';
//如果非nginx upload module 上传文件
if (count(($file = $_FILES['file'])) > 0) {
if ($file['error'] == 0) {
//判断文件类型是否存在,文件后缀是我们自己的key去定义
if ($fileType = array_search($file['type'], $type)) {
//以当前的时间命名目录
$date_dir = date('Y-m-d', time());
//如果目录没创建,我们就自己创建一个
if (!is_dir(FILE_DIR . $date_dir)) {
if (!mkdir(FILE_DIR . $date_dir)) {
return header('location:503.html');
}
}
//文件的MD5+当前unix时间戳+一个5位随机数,如果此处需求频繁也可以用微秒时间戳
$filename = FILE_DIR . $date_dir . '/' . (md5_file($file['tmp_name']) . time() . rand(9999, 99999)) . $fileType;
//生成新的文件
if (rename($file['tmp_name'], $filename)) {
return header('Location: success.html');
}
}
}
switch ($file['error']) {
case 1:
http_response_code(400);
exit('文件大小超出了服务器的空间大小');
case 2:
http_response_code(400);
exit('要上传的文件大小超出浏览器限制');
case 3:
http_response_code(400);
exit('文件仅部分被上传');
case 4:
http_response_code(404);
exit('没有找到要上传的文件');
case 5:
http_response_code(503);
exit('服务器临时文件夹丢失');
case 6:
http_response_code(503);
exit('文件写入到临时文件夹出错');
}
}
//如果是nginx upload module
if (count(($file = $_POST)) > 0) {
//判断文件类型是否存在,文件后缀是我们自己的key去定义
if ($fileType = array_search($file['file_content_type'], $type)) {
//以当前的时间命名目录
$date_dir = date('Y-m-d', time());
//如果目录没创建,我们就自己创建一个
if (!is_dir(FILE_DIR . $date_dir)) {
if (!mkdir(FILE_DIR . $date_dir)) {
return header('location:503.html');
}
}
//文件的MD5+当前unix时间戳+一个5位随机数,如果此处需求频繁也可以用微秒时间戳
$filename = FILE_DIR . $date_dir . '/' . (md5_file($file['file_path']) . time() . rand(9999, 99999)) . $fileType;
//生成新的文件
if (rename($file['file_path'], $filename)) {
return header('Location: success.html');
}
}
}
http_response_code(400);
exit('错误操作方式!');
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