PHP-从提交中获取多个单选按钮值

我是PHP新手。我有一个如下的表格：

<div class="col-xs-2 col-xs-offset-1">
    <input id="radio-ge-1" class="radio-custom" name="radio-ge" type="radio" value="1" checked>
    <label for="radio-ge-1" class="radio-custom-label tooltips">1 <span>Impossible to get marks</span></label>
</div>
<div class="col-xs-2">
    <input id="radio-ge-2" class="radio-custom" name="radio-ge" value="2" type="radio">
    <label for="radio-ge-2" class="radio-custom-label tooltips">2 <span>You have to work hard to get marks</span></label>
</div>
<div class="col-xs-2">
    <input id="radio-ge-3" class="radio-custom" name="radio-ge" value="3" type="radio">
    <label for="radio-ge-3" class="radio-custom-label tooltips">3 <span>The usual, just like any other class</span></label>
</div>

<div class="col-xs-2 col-xs-offset-1">
    <input id="radio-sl-1" class="radio-custom" name="radio-sl" value="1" type="radio" checked>
    <label for="radio-sl-1" class="radio-custom-label tooltips">1 <span>Unbearable pressure</span></label>
</div>
<div class="col-xs-2">
    <input id="radio-sl-2" class="radio-custom" name="radio-sl" value="2" type="radio">
    <label for="radio-sl-2" class="radio-custom-label tooltips">2 <span>High pressure, But doable</span></label>
</div>
<div class="col-xs-2">
    <input id="radio-sl-3" class="radio-custom" name="radio-sl" value="3" type="radio">
    <label for="radio-sl-3" class="radio-custom-label tooltips">3 <span>Fair, just like any other class</span></label>
</div>

我正在尝试使用以下代码将两个单选按钮的值保存在PHP中：

$g_Easiness = $_POST['radio-ge'];
$s_Load = $_POST['radio-sl'];

但在这种情况下，我只得到第一个按钮的值。第二个按钮的值=打开.

我花了两个多小时才弄明白。但无法解决。有人能帮我解决这个问题吗？