<form action = "" method = "post">

        <?
        if (isset ($_GET['id'])){
            $getId = $_GET['id'];
            $info = $_baseData->query("SELECT * FROM Phonebook WHERE id = '$getId'");
            $row2 = mysqli_fetch_array($info); // у меня row2 вместо info

            $nameId = $row2['name'];


            ?> Имя <input type="text" name="name" value = "<?=$row2['name'] ?>"> </br>
        <?}
        else{ ?>
        Имя <input type="text" name = "name" /> </br>
            <? } ?>
        Степень родства <select type = "enum" name="relation" size="1" >
            <option value ="relative" <?=$row2['relation']=='relative'?"selected":" "?> > Родственник </option>
            <option value = "friend" <?=$row2['relation']=='relative'?"selected":" "?> >Друг</option>
            <option value = "colleague" <?=$row2['relation']=='relative'?"selected":" "?>>Товарищ по работе</option>
            <option value = "friend2" <?=$row2['relation']=='relative'?"selected":" "?>>Знакомый</option>
        </select> </br>
        Номер телефона <input type="text" name = "number" value="<?=$row2['phoneNumber']?>"/> </br>
        <input type = "submit" name = "start" value = "Сохранить" />
    </form>