<?php
 if(isset($_POST['rang']) AND !empty($_POST['rang']) AND $_POST['rang'] != $rang['nom']) {
        $newrang = htmlspecialchars($_POST['rang']);
        $insertrang = $bdd->prepare("UPDATE utilisateurs SET rang_id = ? WHERE id = ?");
        $insertrang->execute(array($rang['id'], $_SESSION['id']));
        header('Location: compte.php?id='.$_SESSION['id']);
?>
/*/ Formulaire /*/
<form method="POST" action="" enctype="multipart/form-data">
                <label>Pseudo :</label>
                <input type="text" name="newpseudo" placeholder="Pseudo" value="<?php echo $user['pseudo']; ?>" /><br /><br />
                <label>Mail :</label>
                <input type="text" name="newmail" placeholder="Mail" value="<?php echo $user['mail']; ?>" /><br /><br />
                <label>Rang :</label>
                <select>
                <?php
                while ($rang = $reqrang->fetch())
                {
                ?>
                <option value="<?php echo $rang['id']; ?>"><?php echo $rang['nom']; ?></option>
                <?php
                }
                $reqrang->closeCursor();
                ?>
                </select>
                <br /><br />
                <label>Mot de passe :</label>
                <input type="password" name="newmdp1" placeholder="Mot de passe"/><br /><br />
                <label>Confirmation - mot de passe :</label>
                <input type="password" name="newmdp2" placeholder="Confirmation du mot de passe" /><br /><br />
                <center><input type="submit" value="Mettre à jour mon compte" /></center>
            </form>