PHP OOP INSERT INTO only insert NULL in Database - mysql

Question

I'm trying to add members in my database using OOP, however it only insert NULL values
It works perfectly fine when I'm not using OOP
Here is my PHP code :
$request = $bdd->query('SELECT id_membre, prenom, nom, ville FROM client');
class Membre {
private $_id;
private $_prenom;
private $_nom;
private $_ville;
/*HYDRATATION*/
public function hydrate(array $donnees) {
foreach($donnees as $key => $value) {
$method = 'set'.ucfirst($key);
if (method_exists($this, $method)) {
$this->$method($value);
}
}
}
public function id() { return $this->_id; }
public function prenom() { return $this->_prenom; }
public function nom() { return $this->_nom; }
public function ville() { return $this->_ville; }
public function setId($id) {
$this->_id = $id;
}
public function setPrenom($prenom) {
$this->_prenom = $prenom;
}
public function setNom($nom) {
$this->_nom = $nom;
}
public function setVille($ville) {
$this->_ville = $ville;
}
}
That part seems to be working fine
class MembreManager {
private $_bdd;
public function __construct($bdd){
$this->setBdd($bdd);
}
public function add(Membre $mbr) {
$q = $this->_bdd->prepare("INSERT INTO client(prenom, nom, ville)
VALUES(:prenom, :nom, :ville)");
$q->bindValue(':prenom', $mbr->prenom());
$q->bindValue(':nom', $mbr->nom());
$q->bindValue(':ville', $mbr->ville());
$q->execute();
}
}
$mbr = new Membre([
'nom' => 'Name',
'prenom' => 'Surname',
'ville' => 'City',
]);
$manager = new MembreManager($bdd);
$manager->add($mbr);
while($donnees = $request->fetch()) {
$mbr = new Membre($donnees);
}
Inserting values only seems to work when I manually input string in my Insert Into.