Récupérer les résultats selon les checkboxes cochés

SELECT DISTINCT * FROM annonce A JOIN wilaya W ON A.`code_wilaya` = W.`code_wilaya` WHERE `Etat_annonce`='1' AND (FALSE OR designation_wilaya like 'Choisir' OR (`prix_salle`>='0' and `prix_salle`<='0') OR dinerORcamera ) Array ( [titre] => [choix] => Choisir [number_etoile] => [event] => [place_salle] => [prix_min] => [prix_max] => [option_salle] => Array ( [0] => diner [1] => camera ) [submit] => Filtrer ) Message d'erreur : Unknown column 'dinerORcamera' in 'where clause' 
Warning: mysqli_num_rows() expects parameter 1 to be mysqli_result, boolean given in C:\Program Files (x86)\EasyPHP-DevServer-14.1VC9\data\localweb\projects\Afrahcom\services.php on line 413

          
              <?php
//activation de l'affichage des erreurs PHP
error_reporting(E_ALL);
ini_set('display-errors','on');

//------------------------------------------------------------//
// le temps des tests
//------------------------------------------------------------//



//------------------------------------------------------------//
//récupération PROPRE des variables AVANT de les utiliser
//------------------------------------------------------------//

$salle = !empty($_POST['titre']) ? $_POST['titre']: NULL;
$etoile = !empty($_POST['number_etoile']) ? $_POST['number_etoile']: 0;
$event = !empty($_POST['event']) ? $_POST['event']: NULL;
$place = !empty($_POST['place_salle']) ? $_POST['place_salle']: 0;
$prix_min = !empty($_POST['prix_min']) ? $_POST['prix_min']: 0;
$prix_max = !empty($_POST['prix_max']) ? $_POST['prix_max']: 0;
$wilaya = !empty($_POST['choix']) ? $_POST['choix']: NULL;
 $option_salle = isset($_POST['option_salle']) ? $_POST['option_salle'] : null;
//------------------------------------------------------------//
// Traitement du SUBMIT
//------------------------------------------------------------//
$strsalle  = !empty($salle)  ? " OR nom_salle =  '$salle'  " : "";
$stretoile = !empty($etoile) ? " OR nbre_etoile ='$etoile' " : "";
$strplace  = !empty($place)  ? " OR nbre_place = '$place'  " : "";
$strevenet = !empty($event)  ? " OR event like     '$event%'  " : "";
$strwilaya = !empty($wilaya)  ? " OR designation_wilaya  like     '$wilaya'  " : "";

  $message='';
if( isset($_POST['submit'])) {

$value = implode('OR', (array) $option_salle);

$requete = "
                   SELECT DISTINCT  * 
                   FROM annonce A  JOIN wilaya W 
                                   ON A.`code_wilaya` = W.`code_wilaya` 
                   WHERE `Etat_annonce`='1' 
                    AND 
                   (FALSE 
                   $strsalle
                   $stretoile
                   $strplace
                   $strevenet
                   $strwilaya

                    OR
                   (`prix_salle`>='$prix_min' and `prix_salle`<='$prix_max') 
                   OR
                    $value
                   )             
                  ";


 echo $requete;
print_r ($_POST);    

  $resultat = $conn->query($requete);


  if (!$resultat) {
      printf("Message d'erreur : %s\n", mysqli_error($conn));
  }


  if(mysqli_num_rows($resultat)>0) {
    while ($row = mysqli_fetch_assoc($resultat)) {

	    {
 {

echo  '<div class="work span4">
                   <img src="imagesbd/'. $row["gallerie"] . '" alt="salle" /> 

                    <h4>'.$row['nom_salle'].'</h4>
                    <h4>'.$row['prix_salle'].',00 DZ </h4>
                    <h5> '.$row['event'] .' </h5>
                    <p>'.$row['adresse_salle'].' ,'.$row['designation_wilaya'] .' </p>

		
                    <p> +(213) 0'.$row['tel_fixe'].'  / '.$row['tel_mobile'] .'<p/>

                    <div class="icon-awesome">
                        <a href="imagesbd/'. $row[" rel="nofollow noopener noreferrer" target="_blank"gallerie"] . '"><i class="icon-search"></i></a>
                
                          <a href="afficher_salle_rechercher.php?variable='.$row['id_pub'].'" rel="nofollow noopener noreferrer" target="_blank" "><i class="icon-list-alt"></i></a>
                    
                    </div>
                </div>'; 

     
              }             

}
}

   } else {

     $message= '<div class="alert alert-info">
    <strong>Info!</strong> Aucune résultat a été retourné.
    </div>';
  }
} 
  else {
  $message='<div class="alert alert-danger">
  <strong>Erreur!</strong> php .
  </div>';
}
               ?>
             
    <?php 
if(isset($_POST['submit']))
                      echo  $message; 

    ?>