Question

How do I allow a function to access a database connection without using GLOBAL?

config.php

 DEFINE ('DB_HOSTNAME', 'hostname');
 DEFINE ('DB_DATABASE', 'database');
 DEFINE ('DB_USERNAME', 'username');
 DEFINE ('DB_PASSWORD', 'password');

 $dbc = mysqli_connect(DB_HOSTNAME, DB_USERNAME, DB_PASSWORD, DB_DATABASE);

 if(!$dbc) die("Unable to connect to MySQL: " . mysqli_error($dbc));

functions.php

 function something()
 {
 $info = mysqli_query($dbc, "SELECT info FROM text") or die("Error: ".mysqli_error($dbc));
 }

The above gives me the following error:
mysqli_query() expects parameter 1 to be mysqli, null given in

Answer 1

Use function parameters

function something ($dbc) {
  // your db code here
}

function arguments