SQL/PHP/Session更新UserProfile失败，急求技术帮助

Hey folks,

I know there are tons of existing questions around user profile updates, but I’ve hit a wall with my school assignment that’s due Wednesday—hoping someone here can help me out.

Here’s my problem: Every time I enter new info into my user profile form and hit the update button, I get the error message "update not successful", and absolutely no changes are reflected in the database. I’ve tried a whole bunch of troubleshooting steps already—double-checking my SQL update syntax, making sure form data is being sent correctly to the backend, confirming my database connection is working, and even testing with hardcoded values to eliminate input issues—but nothing has fixed it so far.

I’m on a tight deadline here, so any advice or insights would be a huge help!

内容的提问来源于stack exchange，提问作者Hazaki