Why this code is not running well?

Question

confused

Answer 1

Where did you get the code from?

Answer 2

if you made it, you should know your code is expect to get post request data, otherwise it world not display any stuffs.

Answer 3

you need to have another webpage that post data to this php file.

Answer 4

https://code.sololearn.com/wlXIz730yCK0/?ref=app

Answer 5

i made it, cause i wanna learn

Answer 6

so i have to change methode from post to get?

Answer 7

sololearn has not allowed?