Newbie's question: how can I change the get content? the page hasn't changed.

Newbie's question: how can I change the get content? the page hasn't changed.

After this page is executed once, execute again, modify? User =. the execution result does not change.

Reply to discussion (solution)

$ User = $ _ POST ["user"];
Change
$ User = $ _ GET ["user"];

Didn't you use POST to receive the message? Change? User = the following parameter. it does not affect POST.

Thank you for choosing upstairs. Code correction:

I made two low-level mistakes. Except for post and get,
Change checkstr (user) to checkstr ($ user)
The execution is normal.