Error: Call to undefined function mysql_select_db()

[Ninpabx19]

how to fix this please, im beginner..

Fatal error: Uncaught Error: Call to undefined function mysql_select_db() in C:\xampp\htdocs\SNLS\pages\db_connect.php:2 Stack trace: #0 C:\xampp\htdocs\SNLS\pages\sign_query.php(3): include() #1 {main} thrown in C:\xampp\htdocs\SNLS\pages\db_connect.php on line 2

[Altrea]

That depends on your XAMPP version (v3.2.2 is not a valid XAMPP version number).
Please read this thread to learn more about the XAMPP version and where to find it: [Q&A] Insufficient debug information - base information

[Ninpabx19]

tnx sir my xampp did not compatible for my code and i install another xampp version .. hehe..