<?php
session_start();
$username = "XXXXX";
$password = "YOLO";
$database = "XXXXX";
$localhost = "XXXXX";
$_SESSION['connection'] = mysqli_connect($localhost, $username, $password,
$database);
?>

include "../storeSQL/sql_Connection.php";
 //SQL QUERY bla bla bla//
$isRealAdmin = $_SESSION['connection']->query($sql);