Warning: Undefined array key "q" in C:\xampp\htdocs\pages\global_search.php on line 4

Warning: Undefined variable $database in C:\xampp\htdocs\pages\global_search.php on line 6

Fatal error: Uncaught TypeError: mysqli_real_escape_string(): Argument #1 ($mysql) must be of type mysqli, null given in C:\xampp\htdocs\pages\global_search.php:6 Stack trace: #0 C:\xampp\htdocs\pages\global_search.php(6): mysqli_real_escape_string(NULL, '') #1 {main} thrown in C:\xampp\htdocs\pages\global_search.php on line 6