I’m new to this forum, sorry in advance 🙂
I have a problem with my display of my posts
Let me explain ^^

I want to perform an orderby => ‘$distance’ and display the posts accordingly.
$lat2 and $lon2 are listed in wp.postmeta in meta_key and meta_value. Also $lat and $lon are well recovered without worrie.

I tried to put meta_key/value in my query, but it doesn’t work because my calculation is not done in my database.

object(WP_Query)[9785]
  public 'query' => 
    array (size=5)
      'post_type' => string 'post' (length=4)
      'lon' => string '43.282' (length=6)
      'lat' => string '5.405' (length=5)
      'orderby' => float 4844
      'order' => string 'asc' (length=3)

I have a city filter which when clicked launches my function. I retrieve the radius that I set to 20.30 or 50 depending on the user’s select option

I created a post-view.php template which retrieves the found post well, my template is a loop if $rayon<50 and there are posts it shows me the template several times 🙂

function filter_city(){

    $rayon = $_POST['rayon'];
    $lon = htmlspecialchars($_POST["lon"]);
    $lat = htmlspecialchars($_POST["lat"]);
    $lat2 = get_lat(get_the_id());
    $lon2 = get_lon(get_the_id());
    $resultat = Misc::distance($lat, $lon, $lat2, $lon2, $miles = false);

    $m = round($resultat);

    $myposts = new WP_Query([
        'post_type' => 'post',
        'lon' => $lon,
        'lat' => $lat,
        'orderby' => $m,
        'order' => 'asc'

    ]);
    $response="";

    if ($myposts->have_posts()) {
        while ($myposts->have_posts()) : $myposts->the_post();
            include('post-view.php');

        endwhile;
    } else {
        $response .= include('false.php');
    }

I’ve tried everything

Thank you in advance for your help