Please how can help me fix this problem???

Question

Warning: mysqli_connect() [function.mysqli-connect]: (42000/1049): Unknown database 'login_stech_db' in C:\xampp\htdocs\login_stech_db\connection.php on line 8
failed to connect!

Answer 1

Please how can I fix it?
https://code.sololearn.com/ws66ba1nlrMp/?ref=app

Answer 2

Of course yet all of them

Answer 3

I have used by SQL MyAdmin

Answer 4

I thought my problem is from one of two, either Connection or functions pages

Answer 5

I created index.php, signup.php, login.php, connection.php, functions.php, and logout.php

Answer 6

And when I start session with php code it start to tell me that warning