Javascript 如何在PHP中获取SumoSelect选定值

我使用下拉菜单选择多个选项。但是我无法在PHP中获取所选值数组。当我var\u dump数据时，我得到NULL。。下面是我到目前为止所做的工作的代码

HTML

<form action="" method="POST">
<select name="industry[]" id="industry" style="width:305px;" multiple="multiple" placeholder="Choose Industry" class="SlectBox">
    <option value="" disabled="disabled" selected>-- Choose Industry<span style="color:red; margin-left:2px;">*</span>  -- </option>
    <option value="Agriculture & Food">Agriculture & Food</option>
    <option value="Apparel, Textiles & Accessories">Apparel, Textiles & Accessories</option>
    <option value="Auto & Tranportation">Auto & Tranportation</option>
    <option value="Bags, Shoes & Accessories">Bags, Shoes & Accessories</option>
    <option value="Electronics">Electronics</option>
    <option value="Electrical Equipment, Components & Telecoms">Electrical Equipment, Components & Telecoms</option>
    <option value="Gifts, Sports & Toys">Gifts, Sports & Toys</option>
    <option value="Health & Beauty">Health & Beauty</option>
    <option value="Home, Lights & Construction">Home, Lights & Construction</option>
    <option value="Machinery, Industrial Parts & Tools">Machinery, Industrial Parts & Tools</option>
    <option value="Metallurgy, Chemicals, Rubber & Plastic">Metallurgy, Chemicals, Rubber & Plastic</option>
    <option value="Packaging, Advertising & Office">Packaging, Advertising & Office</option>
 </select>
</form>

---

但是当我

var\u dump

时，我得到了

NULL

。我不知道是什么问题。请帮帮我。提前感谢。

表单标签中的选择框是吗？您能显示

的代码吗？试试这个，可能会有帮助@Matt是的，它在表单标签内。@PraveenKumar您提供的链接对我没有帮助。。谢谢你的回复。

<script type="text/javascript">
        $(document).ready(function () {
            window.asd = $('.SlectBox').SumoSelect({ csvDispCount: 3 });
        });
 </script>

$values = $_POST['industry'];
var_dump($values);