Ucenter user name registration prompt: the user name is invalid (with the word "Xin)

Problem: When registering a user name (such as "Shi Kexin") in uchome, the system prompts that the user name is invalid. The system also prompts that the user name is added in the ucenter background.

Cause: because the hexadecimal code of "Xin" in UTF is E6 AC A3. And the model/user in the UCenter. in the php file check_username method, $ guestexp = 'xa1xa1 | xACxA3 | ^ Guest | ^ xD3xCExBFxCD | xB9x43xABxC8 & prime; the filtering rule "| xACxA3" in this row is repeated and therefore cannot be.

Solution: open model/user. php in the UCenter directory and find the check_username method (as shown in the figure above). Delete "| xACxA3.