$verif= $bdd->query('select count(*) from personne_physique where CIN_Client=$_POST[\'cin_client\'] '); $nbre=mysql_num_rows($verif); if ($nbre ==0) //insertion se réalise else //enregistrement existe déja !!
$verif=$bdd->prepare('select * from personne_physique where CIN_Client="'.$_POST['cin_client'].'"'); $verif->execute(); $nbre=$verif->rowCount(); IF($nbre==0) { //insertion } else { //message d'erreur }