Use PHP to develop a city to realize product evaluation and post pictures

How to use PHP Developer City to realize the function of product evaluation and photo sharing

With the development of e-commerce, product evaluation is one of the important basis for users to make purchasing decisions. The evaluation and picture sharing function provides a more intuitive reference. Therefore, when developing a city system, it is very necessary to implement the product evaluation and picture sharing function. This article will introduce how to use PHP to develop the mall system to realize the function of product evaluation and photo sharing.

1. Overview

In the mall system, the following steps are required to implement the product evaluation and picture posting function:

1. Database design: evaluation information and picture information need to be Design the database table structure respectively;
2. User upload pictures: users can choose to upload pictures when evaluating and store them on the server;
3. Picture management: manage uploaded pictures, including storage paths , access path, etc.;
4. Product evaluation display: display evaluation information on the product details page, and display evaluation pictures.

The specific implementation methods of these steps will be introduced in detail below.

2. Database design

In order to store evaluation and picture information, two database tables need to be designed: one is the evaluation table, including evaluation ID, product ID, user ID, evaluation content and other fields; The other is a picture table, including fields such as picture ID, evaluation ID, and picture path. The evaluation table and the picture table are related through the evaluation ID.

3. Users upload pictures

When evaluating products, users can choose to upload pictures for posting. PHP provides a file upload function, and the image upload function can be implemented by writing code.

1. Front-end page design: Add an input box for file upload in the product evaluation form, and set relevant format restrictions and size restrictions;
2. Back-end code writing: After receiving the evaluation When submitting data in the form, it is judged whether the user has chosen to upload an image. If so, PHP's file upload function is used to save the image on the server and the save path is stored in the database.

4. Picture Management

In order to facilitate the management of pictures, it is necessary to design the file storage path and access path.

1. File storage path: You can specify a directory on the server as the path for image storage, and save images uploaded by users to this directory. This path needs to be configured in the code to facilitate subsequent file management;
2. Access path: In order to facilitate users to access images, the access path to images can be saved in the database table. The access path can be spliced ​​by the domain name of the server and the image storage path.

5. Product evaluation display

Display user evaluation information on the product details page, including text evaluations and pictures.

1. Query evaluation information: According to the product ID, query relevant evaluation information from the database, including evaluation content and evaluation ID;
2. Query picture information: According to the evaluation ID, query from the database Query relevant image information, including image paths;
3. Dynamic display: Use HTML and CSS to display evaluation information and pictures in the product details page in an appropriate style.

6. Summary

Through the implementation of the above steps, we can use the PHP developer city system to realize the function of product evaluation and photo sharing. Users can upload pictures for evaluation during the shopping process, and the system will save the pictures on the server and display the evaluation information and pictures on the product details page. Such functions can improve users' shopping experience and help them understand and select products more accurately.

It should be noted that in order to protect user privacy and prevent malicious uploads, relevant verification and restrictions need to be added when uploading images. At the same time, performance and security need to be considered in database design and file management. The most important thing is that specifications are followed during the development process and appropriate testing and optimization are performed to ensure the stability and reliability of the system.

I hope this article will be helpful on how to use the PHP developer city system to realize the function of product evaluation and photo sharing for readers' reference and reference. At the same time, we also hope that more developers can continue to study and make greater contributions to the development of the e-commerce industry.

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