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This course is based on the real-time web chat and backend customer management system developed by php workerman to create websocket service. This course requires you to have a certain PHP oop foundation. The course content mainly includes: 1. Websoket communication principle and relationship with http 2. Workerman to build websoket service 3. QQ group chat principle and implementation 4. Workerman message push and timer 5. One-on-one private chats and customer service randomly assigned 6. Customer service background obtains online customer list, etc. 7. Chat message storage and other contents.