如何在laravel中将数组转换为字符串

我使用 bootstrap 表单从数组中的复选框值获取输入.

这是我的密码

<div class="form-group col-md-12">
    <div class="custom-control custom-checkbox custom-control-inline">
        <input type="checkbox" id="eduPrimary" name="education[]" 
        class="custom-control-input" value="primary" />
        <label class="custom-control-label" for="eduPrimary">primary</label>
    </div>
</div>
<div class="form-group col-md-12">
    <div class="custom-control custom-checkbox custom-control-inline">
        <input type="checkbox" id="eduSecondary" name="education[]" 
        class="custom-control-input" value="secondary" />
        <label class="custom-control-label" for="eduSecondary">secondary</label>
    </div>
</div>
<div class="form-group col-md-12">
    <div class="custom-control custom-checkbox custom-control-inline">
        <input type="checkbox" id="eduUniversity" name="education[]" 
        class="custom-control-input" value="university" />
        <label class="custom-control-label"for="eduUniversity">university</label>
    </div>
</div>

在后端，我使用laravel将值存储到数据库中，但在mysql中存储数组到字符串时出错.

public function store(Request $request,AdProfile $adprofile)
{
    $adprofile->education = $request->education[];
    $adprofile->save();
    return redirect()->route('adprofile.profilecomplete');
}