Valeur checkbox en db

$pdo= new PDO('mysql:dbname=inovdb;host=localhost','root','');

   $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
     
   if (isset($_POST['valider'])) {
 
$NOM=$_POST['nom'];
$PRENOM=$_POST['prenom'];
$ADRESSE=$_POST['adresse'];
$DATE=$_POST['date'];
$LIEU=$_POST['lieu'];
$EMAIL=$_POST['email'];
$PASSWORD=$_POST['password'];
$CHECK=$_POST['domaine'];

$mdpcryp=sha1($PASSWORD);

$sql=$pdo->prepare("INSERT INTO stagiaire SET nom=?, prenom=?, adresse=?, date_naiss=?, lieu=?, email=?, password=?, domaine=?");
$sql->execute([$NOM,$PRENOM,$ADRESSE,$DATE,$LIEU,$EMAIL,$mdpcryp]);