Question

I am trying to set up a MySQL connection in a main script, and then call various functions depending on what I want to do. I am having trouble passing the connection information to the function.

I have a class “queries” which contains various functions, all which return an array. This is what the code looks like in my main script (calling function normal)

$mysqli = new mysqli($db_host, $db_user, $db_pass, $db_name) or die (mysql_error());
$stats = $queries->normal($mysqli);

And then inside of the queries resource, I have this code:

class queries {
    function normal($mysqli) {
        $query = "SELECT number, first, last FROM roster";
        $roster = $mysqli->query($query);

Then I proceed to do what I need. I cannot get this to work though. I get the error

Call to a member function normal() on a non-object

on the line that I call the function in my main file.

This is similar to these questions, but I can’t quite figure it out.
Passing database connection by reference in PHP
Ensuring MySQL connection works in PHP function

Thank you

Answer 1

“Call to a member function normal() on a non-object” means that you are trying to call normal() on a variable that is not an object. Probably you meant to do this:

$queries = new queries();
$stats = $queries->normal($mysqli);