How to display information for a specific user?

Question

PHP

With this code, only the user's data is displayed, which is the first in the database How to display this information, but for each user its own? For example,
Nickname: each user has his own
Games played: each has his own number,
etc.
Code itself: https://pastebin.com/WB7edTxV

Answer 1

$result=mysql_query('SELECT * FROM `users` where id=100500');