<?php
include "../classes/db.class.php";
session_start();

$db = new db();

$res = $db->exec_query('assets',['*'],'','','','',"fleet_no = '{$_GET['fleet_id']}'");

if($res->num_rows < 1){
    echo 1;
}else{
    $row = $res->fetch_assoc();
    echo $row['asset_id'];
}