Teachers, when inserting php into the database mysql, it is all empty, how to solve it?

Question

I have introduced the jquery library file, but it has no effect. This error keeps showing up. How can I solve this? Masters.

雪了无痕 · Answer

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小晴子 · Answer

http://nq1p22u.cn/Dongmen Wenli Information Network thanks the original poster

? 现在努力，未来可期！ · Answer

It seems that your problem lies in the database connection. Check to see if the port is 80, or simply delete the port number at the end. If the port number is wrong, it will be a blank page. Check to see if you have referenced the conn.php file and see if it is a problem with the configuration and file path.

autoload · Answer

Do you use PHP to connect to the database?