Just a sample man above,
I am using like that:
/************************************CONFIG****************************************/
//DATABSE DETAILS//
$DB_ADDRESS="localhost";
$DB_USER="u109863032_financas";
$DB_PASS="S1@@md:g";
$DB_NAME="u109863032_financas";
//SETTINGS//
//This code is something you set in the APP so random people cant use it.
$SQLKEY="S1@@md:g";
/************************************CONFIG****************************************/