ChatGPT Clone with PHP & MySQL (Part 2) – Save AI Chat History to a Database

Описание: Want your AI chatbot to save and load chat history just like ChatGPT? In this video, we take our ChatGPT Clone to the next level by connecting it to a MySQL database and making all AI-generated conversations persist across sessions.

This is Part 2 of our ChatGPT Clone series where we’re building a fully functional, self-hosted AI chatbot using:
🔹 PHP for backend
🔹 MySQL for database storage
🔹 JavaScript for front-end interactivity
🔹 Cohere API for AI responses

By the end of this tutorial, you’ll have a chatbot that:
✅ Stores chats in a database (MySQL)
✅ Loads previous conversations
✅ Dynamically updates chat titles based on your first prompt
✅ Has a fully working sidebar navigation
✅ Supports starting new chats instantly

This isn’t just a code-along — this is real-world AI app development, showing you how to structure your backend, connect APIs, and store data like a pro.

If you haven’t watched Part 1 yet, check it out first: Build a ChatGPT Clone with Cohere API, PHP, JS & MySQL (Part 1):    • Build a ChatGPT Clone with Cohere API, PHP...  

💡 Tip: Follow along with the code step-by-step. Pause, copy, and test as you go — by the end, your chatbot will feel like a true ChatGPT alternative running on your own server!

⏱️ Timestamps

0:00 – Intro & What You’ll Build in Part 2
0:35 – Creating the MySQL Database & Tables (phpMyAdmin)
1:12 – Updating config.php with Database Setup
1:23 – Writing db.php to Connect to MySQL
1:47 – Updating chat.php to Insert AI Responses into DB
3:00 – Creating load_chat.php to Load Saved Conversations
3:40 – Fixing the “Invalid JSON” Error & Debugging Paths
4:33 – Adding Sidebar Chat History with get_chats.php & get_message.php
6:28 – Fixing Broken “New Chat” & Dropdown Buttons
7:58 – Updating Chat Titles Dynamically with update_chat_title.php
8:50 – Testing Everything: Full Database-Driven Chat History




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