switch ($_POST['method']) {
case "user_INS":
$validate = new validate();
$data = $validate->user();
$function = new functions();
$data = $function->user_INS($mysqli);
break;
case "login_SEL":
$validate = new validate();
$data = $validate->login();
$function = new functions();
$data = $function->login_SEL($mysqli);
break;
case "service_SEL":
$validate = new validate();
$data = $validate->services_sel();
$function = new functions();
$data = $function->service_SEL($mysqli);
break;
case "service_INS":
$validate = new validate();
$data = $validate->services_ins();
$function = new functions();
$data = $function->service_INS($mysqli);
break;
case "category_SEL":
$validate = new validate();
$data = $validate->category_sel();
$function = new functions();
$data = $function->category_SEL($mysqli);
break;
