Mysql selection liées avec (les sessions)

$query = "SELECT * FROM 'client' WHERE ville = ".$_SESSION['ville']; 

Warning: mysql_fetch_array() expects parameter 1 to be resource, boolean given in C:\wamp\www\wimaxcustomer\liste_wimaxsite.php on line 29

$query = "SELECT * FROM 'wimax_site' WHERE ville ='.$_SESSION ['ville'].'";

mysql_connect ... etc

try {   
    $pdo_options[PDO::ATTR_ERRMODE] = PDO::ERRMODE_EXCEPTION;   
     
    $bdd = new PDO('mysql:host=localhost;dbname=nombdd, root, '', $pdo_options);   
}   
catch (Exception $e) {   
    die('Erreur : ' . $e->getMessage());   
}

villes(id, libelle)   
client(id, pseudo, email, ville)  

$req = $bdd->prepare('SELECT * FROM client WHERE ville = :city');   
$req->bindParam(':city', $_SESSION ['ville'], PDO::PARAM_INT);   
$req->execute();   

while($data = $req->fetch()) {   
    echo $data['pseudo'].'<br />';   
} 

$req = $bdd->prepare('SELECT c.id, c.pseudo, v.libelle AS libelleVille FROM client c INNER JOIN villes v ON v.id = c.ville WHERE c.ville = :city GROUP BY c.id, c.pseudo, libelleVille');   
$req->bindParam(':city', $_SESSION ['ville'], PDO::PARAM_INT);   
$req->execute();   

while($data = $req->fetch()) {   
    echo $data['pseudo'].' - '.$data['libelleVille'].'<br />';   
}

require_once 'lien_vers_le_fichier_bdd_connect.php';