Cannot redeclare db_connect() (previously declared

<?php
 
    function db_connect()
    {
        $host = 'localhost';
        $user = 'shop_user';
        $pswd = '123';
        $db = 'shop';
        
        $connection = mysql_connect($host, $user, $pswd);
        if (!$connection || !mysql_select_db($db,$connection))
        {
            return false;
        }
        return $connection;
    }
 
    function db_result_to_array($result)
    {
        $res_array = array();
        $count = 0;
        while($row = mysql_fetch_array($result))
        {
            $result [$count] = $row;
            $count++;
        }
        return $res_array;
    
    }
    
    
    function get_products()
    {
        db_connect();
        
        $query = "SELECT * FROM products ORDER BY id DESC";
        
        $result = mysql_query($query);
        
        $result = db_result_to_array($result);
        
        return $result;
    }
    
 
 
 
    ?>

<?
 
    include('db_fns.php');
 
    $view = empty($_GET['view']) ? 'index' : $_GET['view']; 
    include($_SERVER['DOCUMENT_ROOT'].'/db_fns.php');
 ?>
<? $products = get_products();
foreach($products as $item):?>
 
<?endforeach;?>