在两个选定日期之间选择* FROM表WHERE日期

我想显示两个日期之间的数据.但我希望能够选择这两个日期.我不知道在哪里或如何存储这些日期，以便能够在SELECT中添加变量.回答时请非常具体.谢谢！ 这是我的代码的样子:

I want to display data between two dates. But I want to be able to select those two dates. I don`t know where or how to store those dates in order to be able to add a variable in the SELECT. Please be very specific when you answer. Thank you! This is how my code looks like:

<div class ="row">


<div class ="col-md-3">


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

        <div class="form-group">

            <label for="startdate">Start date:</label>
            <input class="form-control" type="date" name="startdate" id="startdate" >

        </div>

        <div class="form-group">

            <label for="enddate">Ending date:</label>
            <input class="form-control" type="date" name="enddate" id="enddate" >

        </div>

        <button type="submit" class="btn btn-default">Submit</button>
        <input type="hidden" name="submitted" value="1" />


    </form>

</div>
</div>

<div class="panel panel-default">
<!-- Default panel contents -->


<!-- Table -->
<table class="table">
    <thead>
        <th>Nume</th>
        <th>Prenume</th>
        <th>Serviciu</th>
        <th>Data</th>
        <th>Ora</th>
        <th>Email</th>
        <th>Telefon</th>
        <th>Status</th>
    </thead>



    <?php

        $query = "SELECT * FROM rezervari2 ORDER BY data ASC";
        $result = mysqli_query($dbc, $query);

        while($list = mysqli_fetch_assoc($result)){ 

            $list = data_rezervare($dbc, $list['idrezervare']);
    ?>   

    <tr>
        <td><?php echo $list['nume']; ?></td>
        <td><?php echo $list['prenume']; ?></td>            
        <td><?php echo $list['serviciu']; ?></td>
        <td><?php echo $list['data']; ?></td>
        <td><?php echo $list['ora']; ?></td>
        <td><?php echo $list['email']; ?></td>
        <td><?php echo $list['telefon']; ?></td>
        <td><?php echo $list['status']; ?></td> 
    </tr>

     <?php  } ?>     

</table>



</div>