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JavaEdge
JavaEdge
Sep 9, 2024 · Backend Development

Avoid Common Pitfalls When Implementing WeChat Pay v2: A Backend Guide

This article outlines essential backend best practices for integrating WeChat Pay v2, covering correct handling of order amounts, trade type fields, second signatures, merchant binding, currency units, duplicate consumption prevention, payment result verification, non‑transactional operation logging, and the unified order API.

BackendDuplicate PreventionJava
0 likes · 6 min read
Avoid Common Pitfalls When Implementing WeChat Pay v2: A Backend Guide
php Courses
php Courses
Jul 12, 2023 · Backend Development

Prevent Duplicate Remote Image Saving in PHP by Generating Unique Filenames

To prevent storing duplicate remote images on a PHP server, this guide explains two techniques—generating a unique filename from the image URL or from the image content using MD5 hashing—along with complete PHP code examples that check for existing files before saving.

BackendDuplicate PreventionImage Processing
0 likes · 5 min read
Prevent Duplicate Remote Image Saving in PHP by Generating Unique Filenames