PC28 Random Number Simulation System Source Code Deployment Guide: Fixing Preset Result Publishing & Admin Configuration Notes

Disclaimer: This article is for technical education and demonstration only. It is not professional or financial advice. Any real-world deployment must comply with applicable laws and regulations.

I recently helped a client deploy a PC28 probability simulation demo system — the Nangong edition source code. The versions floating around online all share the same old bug: the preset result publishing feature doesn’t work, and what shows on the front end doesn’t match the admin settings. I’m writing down the whole fix process and deployment details here to save the next person some debugging time.

Hands-On Review: What This Source Code Can Actually Do

Let me be clear about the positioning first: this is a probability simulation demo system, built around random number algorithm demonstrations and simulated result publishing data — purely for technical demonstration purposes. After testing, here are the main features:

1. Random Number Generation Engine

The admin panel lets you configure the number generation algorithm with custom probability weights. This edition adds an algorithm toggle switch compared to the older version, letting you switch between two random modes for more flexible demos.

2. Preset Result Publishing (The Focus of This Fix)

The original version’s problem: you set a simulated result in the admin panel, but the front end never updates when the time comes. Troubleshooting showed the scheduled task wasn’t running.

3. Admin Panel

Round management, user management, and statistical reports are all there. The interface is a classic admin template, and anyone familiar with PHP can modify it quickly.

Deployment Essentials: Environment and Steps

My environment: BaoTa panel with Nginx 1.22 + PHP 7.4 + MySQL 5.7. Don’t use PHP 8 — this source code has plenty of legacy syntax, and 8.0 throws errors immediately.

How to Fix Preset Result Publishing

The core issue is in crontab. The source code has a cron directory containing the result publishing scheduled script, which needs a scheduled task on the server:

* * * * * php /www/wwwroot/project-directory/cron/publish.php

After configuring it, check file permissions: give the cron directory 755, and give 777 to the directory where the script writes logs. On my first deployment I didn’t set permissions properly, the log file couldn’t be written, and results never published — took me ages to figure out.

Database Configuration

After importing the SQL, update the database connection in config. Make sure the table prefix matches the SQL file, or the admin panel will just show a blank page. Also, set the database timezone to UTC+8 — otherwise round timestamps will be off by 8 hours and the front end will look weird.

URL Rewriting

For Nginx, the standard ThinkPHP rewrite rules work as-is, no changes needed. On Apache, remember to enable the rewrite module.

Highlight: with the preset result publishing fix applied, this edition supports setting simulated data in advance by round number, with the scheduled task automatically pushing it to the front end — a complete demo loop that works great for teaching demonstrations.

Customization Tips and Pitfall Log

A few things to know if you plan to customize:

First, the code structure is the older ThinkPHP 5 framework. Templates and logic are reasonably well separated — to change front-end styles, just edit the view directory.

Second, regarding payment interfaces: the source code ships with a simulated channel only, no real payment integration. If you want to hook up third-party APIs in your customization, you’ll need to write your own SDK — don’t expect it to work out of the box.

Third, multilingual support: it ships with Simplified Chinese only. Language packs live in the lang directory; to add English, copy one and translate it. Not much work.

My biggest pitfall: when fixing the publishing feature, I forgot to restart php-fpm. The config changes never took effect, I assumed the code was buggy, and wasted two hours going in circles. Restart the service after changing configs — lesson learned the hard way.

Who This Is For

This source code suits three groups: developers building random number algorithm teaching demos; beginners who want to learn ThinkPHP project structure — great for reading code and practicing; and teams that need to build a data simulation platform, since there’s plenty of room for secondary development.

FAQ

Q: I set a preset result but it doesn’t publish — what now?
A: Nine times out of ten it’s a missing scheduled task or insufficient permissions. First check whether the crontab entry was added, then check whether the cron directory logs have write permission, and finally confirm the PHP CLI version matches the web version.

Q: Are there PHP version requirements?
A: 7.4 is recommended; I’ve tested 7.2 through 7.4 and all work. Version 8.0+ throws fatal errors due to legacy syntax — not worth the trouble.

Q: Can it connect to real payment systems?
A: This system is positioned as a probability simulation demo platform, intended only for technical study and teaching demonstrations. Please comply with applicable laws and regulations; any unlawful use is prohibited. Connecting to any real funds channel is neither recommended nor supported.

Q: Can I change the front-end styles?
A: Yes. Templates are in the view directory and static assets in public/static — same workflow as any ordinary TP project.

Overall, once the publishing fix was in place, the system ran stably — a full week of continuous testing without a single missed round. If you run into issues, feel free to discuss deployment details in the comments.

Disclaimer: This article is for technical education and demonstration only. It is not professional or financial advice. Any real-world deployment must comply with applicable laws and regulations.

#PC28 source code #source code setup #deployment notes #ThinkPHP #simulation system