I used the introduction of space elements, written in the same way as you, and reported an error message.

Question

Fatal error: Cannot use beijing\haidian\tiananmen\Animal as Animal because the name is already in use in C:\xampp\htdocs\tp5\ceshi.php on line 19

19行代码 use beijing\haidian\tiananmen\Animal;

Answer 1

Fatal error: Beijing Haidian Tiananmen Animals cannot be used because the name is already in use. The result of direct translation. It is recommended to translate it when you encounter problems next time. It will help you learn to troubleshoot.