Laravel / PHP-从多个复选框创建布尔值数组

Question

I"m attempting to create an array of a user's selections from 4 checkboxes, where the values are boolean (1 or 0). Here's where I'm at so far:

$selections = [
        'marketing' => $request->get('marketing'),
        'promotional' => $request->get('promotional'),
        'news' => $request->get('news'),
        'feedback' => $request->get('feedback')
    ];

    foreach ($selections as $selection) {
        if ($selection === null) {
            return $selection = 0);
        }
    }
    dd($selections);

Trying to foreach through and check if the checkbox was deselected(null) and set that to zero. I don't think I can do this in my form, but here's that code as well just in case:

<div class="form-group col-sm-12">
        <label>Uncheck the categories you would like to not receive emails from.</label>
        <div class="checkbox">
            <br/>
            <label>
            {{ Form::checkbox('marketing', '1', true) }}
            Marketing</label>
        </div>
        <div class="checkbox">
            <br/>
            <label>
            {{ Form::checkbox('promotional', '1', true) }}
            Promotional</label>
        </div>
        <div class="checkbox">
            <br/>
            <label>
            {{ Form::checkbox('news', '1', true) }}
            News</label>
        </div>
        <div class="checkbox">
            <br/>
            <label>
            {{ Form::checkbox('feedback', '1', true) }}
            Feedback</label>
        </div>
    </div>

Answer 1

Answer migrated from comment

The problem here is the lack of a default value.
The $request->get() function call will return null if the value is not in the request which is the case for a unchecked checkbox.
One solution for this problem is the ?? operator in php.

$request->get('marketing') ?? 0

This essentially says "Take the value of 'marketing', if it is not defined use the value 0 ".

Answer 2

It's a practical way for update and create of check boxes and switch buttons which works perfectly on our website

 <label>

    @if($model->exists)
        <!--on edit-->
        <input type="checkbox" name="active" {{$model->active ? 'checked value="1"' : 'value="0"'}}>
    @else
       <!--on create-->
       <input  type="checkbox" name="active" checked value="{{old('active', 1)}}">
    @endif

 </label>