Passing buttons-checkbox values ​​to php handler?

Question

PHP

Good afternoon!
I am using Bootstrap. There is a form on the page, with buttons-checkbox elements .
The results of the form are passed to the php handler, which sends an email.
The problem is that the buttons-checkbox elements are not checkbox , so they are not passed by classical means.
Therefore, the question is: how to pass the value of the pressed buttons to the php handler?

<form class="form form-horizontal" method="POST" action="callback.php">
  <div class="controls">
    <div class="btn-group" data-toggle="buttons-checkbox">
      <div class="btn btn-mini" value="value_1">Опция 1</div>
      <div class="btn btn-mini" value="value_2">Опция 2</div>
      <div class="btn btn-mini" value="value_3">Опция 3</div>
      <div class="btn btn-mini" value="value_4">Опция 4</div>
      <div class="btn btn-mini" value="value_5">Опция 5</div>
    </div>
  </div>
  <button class="btn btn-success" type="submit">Отправить</button>
</form>

UPD:
I solved the problem through hidden checkboxes.

<form class="form form-horizontal" method="POST" action="callback.php">
  <div class="controls">
    <div class="btn-group" data-toggle="buttons-checkbox">
      <input id="option_1" type="checkbox" name="checkbox[]" value="value_1"/>
      <label class="btn btn-mini" for="option_1">Опция 1</label>
      <input id="option_2" type="checkbox" name="checkbox[]" value="value_2"/>
      <label class="btn btn-mini" for="option_2">Опция 2</label>
      <input id="option_3" type="checkbox" name="checkbox[]" value="value_3"/>
      <label class="btn btn-mini" for="option_3">Опция 3</label>
      <input id="option_4" type="checkbox" name="checkbox[]" value="value_4"/>
      <label class="btn btn-mini" for="option_4">Опция 4</label>
      <input id="option_5" type="checkbox" name="checkbox[]" value="value_5"/>
      <label class="btn btn-mini" for="option_5">Опция 5</label>
    </div>
  </div>
  <button class="btn btn-success" type="submit">Отправить</button>
</form>

Answer 1

Hidden checkboxes? When you click on the div, the value of the checkbox changes

Answer 2

<form class="form form-horizontal" method="POST" action="callback.php">
    <div class="controls">
        <div class="btn-group" data-toggle="buttons-checkbox" name="my_name">
            <div class="btn btn-mini" value="value_1">Опция 1</div>
            <div class="btn btn-mini" value="value_2">Опция 2</div>
            <div class="btn btn-mini" value="value_3">Опция 3</div>
            <div class="btn btn-mini" value="value_4">Опция 4</div>
            <div class="btn btn-mini" value="value_5">Опция 5</div>
        </div>
    </div>
    <button class="btn btn-success" type="submit">Отправить</button>
</form>

$(function(){
   $('.btn-group[data-toggle="buttons-checkbox"]').each(function(){
       var name = $(this).attr('name');
       var def_val= $(this).find('btn:eq(0)');
       $(this).add('input').attr({'name':name,'type':'hidden'}).vla(def_val);
   });
});
$('.btn-group .btn').live('click',function(){
    $(this).parent().find('input').val($(this).val());
});

Something like this. An input can be added manually.