Table of Contents
回复内容:
Home Backend Development PHP Tutorial mysql - php怎么记录用户下载了一个文件?

mysql - php怎么记录用户下载了一个文件?

Jun 06, 2016 pm 08:11 PM
mysql php

类似用百度文库的时候,下载一个文件,这个文件需要1个下载券,当第一次下载的时候,就会扣掉1个下载券,当这个帐号再次下载这个文件的时候,就不会再扣下载券。

我想会有一个download_records表,和users表进行一对多关联,每下载一个文件,就往download_records表写入一条记录,像这样:

<code>id   download_record  user_id
1    ...              123
2    ...              123</code>
Copy after login
Copy after login

那么,这个download_record字段该记录什么东西呢,是这个文件的路径+文件名吗?还是其他什么东西呢?

回复内容:

类似用百度文库的时候,下载一个文件,这个文件需要1个下载券,当第一次下载的时候,就会扣掉1个下载券,当这个帐号再次下载这个文件的时候,就不会再扣下载券。

我想会有一个download_records表,和users表进行一对多关联,每下载一个文件,就往download_records表写入一条记录,像这样:

<code>id   download_record  user_id
1    ...              123
2    ...              123</code>
Copy after login
Copy after login

那么,这个download_record字段该记录什么东西呢,是这个文件的路径+文件名吗?还是其他什么东西呢?

你把账号 跟 下载文件建立一个关联表

思路:
不能使用直接下载,就是说下载的时候不给予解析。禁止 服务器地址/av.avi 这种下载。换成xxx.php?filename=av.avi这样去解析下载。然后在xxx.php写业务逻辑就好了

可以记录你的文件ID 如果你的文件有多种类型并保存多个地方 这个ID可以重复 再加一个type记录文件类型
文件类型跟ID加唯一限制

题主,你的下载的资源是不是后台上传的?后台上传的话应该是有ID的,你可以在资源下载表记录资源ID,用户ID,下载时间==,其他就根据项目需求去定咯

记录文件id

<code>id    article_id    user_id   down_num   </code>
Copy after login

下载时判断用户是否下载过,下载过就不扣积分,down_num是下载次数,当然也可以没下载一次增加一条记录,就不需要这个字段

我建议建立文件表用户表的多对多映射。
建一张表只记录文件id和用户id。
当然如果你希望在一定时间后下载到期,可以在增加一个时间戳字段

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

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

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)

Hot Topics

Java Tutorial
1663
14
PHP Tutorial
1266
29
C# Tutorial
1238
24
MySQL and phpMyAdmin: Core Features and Functions MySQL and phpMyAdmin: Core Features and Functions Apr 22, 2025 am 12:12 AM

MySQL and phpMyAdmin are powerful database management tools. 1) MySQL is used to create databases and tables, and to execute DML and SQL queries. 2) phpMyAdmin provides an intuitive interface for database management, table structure management, data operations and user permission management.

The Compatibility of IIS and PHP: A Deep Dive The Compatibility of IIS and PHP: A Deep Dive Apr 22, 2025 am 12:01 AM

IIS and PHP are compatible and are implemented through FastCGI. 1.IIS forwards the .php file request to the FastCGI module through the configuration file. 2. The FastCGI module starts the PHP process to process requests to improve performance and stability. 3. In actual applications, you need to pay attention to configuration details, error debugging and performance optimization.

Explain the purpose of foreign keys in MySQL. Explain the purpose of foreign keys in MySQL. Apr 25, 2025 am 12:17 AM

In MySQL, the function of foreign keys is to establish the relationship between tables and ensure the consistency and integrity of the data. Foreign keys maintain the effectiveness of data through reference integrity checks and cascading operations. Pay attention to performance optimization and avoid common errors when using them.

SQL vs. MySQL: Clarifying the Relationship Between the Two SQL vs. MySQL: Clarifying the Relationship Between the Two Apr 24, 2025 am 12:02 AM

SQL is a standard language for managing relational databases, while MySQL is a database management system that uses SQL. SQL defines ways to interact with a database, including CRUD operations, while MySQL implements the SQL standard and provides additional features such as stored procedures and triggers.

Compare and contrast MySQL and MariaDB. Compare and contrast MySQL and MariaDB. Apr 26, 2025 am 12:08 AM

The main difference between MySQL and MariaDB is performance, functionality and license: 1. MySQL is developed by Oracle, and MariaDB is its fork. 2. MariaDB may perform better in high load environments. 3.MariaDB provides more storage engines and functions. 4.MySQL adopts a dual license, and MariaDB is completely open source. The existing infrastructure, performance requirements, functional requirements and license costs should be taken into account when choosing.

How to safely store JavaScript objects containing functions and regular expressions to a database and restore? How to safely store JavaScript objects containing functions and regular expressions to a database and restore? Apr 19, 2025 pm 11:09 PM

Safely handle functions and regular expressions in JSON In front-end development, JavaScript is often required...

What happens if session_start() is called multiple times? What happens if session_start() is called multiple times? Apr 25, 2025 am 12:06 AM

Multiple calls to session_start() will result in warning messages and possible data overwrites. 1) PHP will issue a warning, prompting that the session has been started. 2) It may cause unexpected overwriting of session data. 3) Use session_status() to check the session status to avoid repeated calls.

How does MySQL differ from Oracle? How does MySQL differ from Oracle? Apr 22, 2025 pm 05:57 PM

MySQL is suitable for rapid development and small and medium-sized applications, while Oracle is suitable for large enterprises and high availability needs. 1) MySQL is open source and easy to use, suitable for web applications and small and medium-sized enterprises. 2) Oracle is powerful and suitable for large enterprises and government agencies. 3) MySQL supports a variety of storage engines, and Oracle provides rich enterprise-level functions.

See all articles