How to invisible the message "No result found" during page loading in Wordpress?

Question

I want to disable the message "No result found" during page loading in my Wordpress site.

$search_code = $_POST['search_code'];

global $wpdb;

$helloworld_id = $wpdb->get_var("SELECT s_image FROM search_code WHERE s_code = $search_code");

if (empty($helloworld_id)) { 
echo '<div class="no_results">No results found</div>'; 
}
else 
{ 
?>

<img src="http://igtlaboratories.com/wp-content/uploads/images/<?php echo $helloworld_id; ?>"style="width:200px;height: auto;">

<?php
}
}

I used this code but when page load by default "No result found" visible. How I disable this massage during page load. Any help?

Answer 1

Use this code

if(isset($_POST['search_code']) && !empty($_POST['search_code']))
{
    $search_code = $_POST['search_code'];
    global $wpdb;
    $helloworld_id = $wpdb->get_var("SELECT s_image FROM search_code WHERE s_code = $search_code");
    if (empty($helloworld_id)) { 
        echo '<div class="no_results">No results found</div>'; 
    }else{ ?>
        <img src="http://igtlaboratories.com/wp-content/uploads/images/<?php echo $helloworld_id; ?>"style="width:200px;height: auto;">
    <?php }
}