<div class="form-group">
<label class="col-md-3 control-label">Admob On/off :-</label>
<div class="col-md-6">
<select class="form-control " type="text" name="ads_status" >
<option value="on" <?php if($settings_row['ads_status']== 'on') echo "selected = 'selected'" ?> >On</option>
<option value="off" <?php if($settings_row['ads_status'] == 'off') echo "selected = 'selected'" ?> >Off</option>
</select>
</div>
</div>
J'espère que cela vous aidera.