Laravel Blade: Increment variable by 1 each time?

Solution:1

Add iterator to @foreach:

@foreach($categories as $key => $category)
  <li @if ($key === 0) class="active" @endif>
    <a href="#tab_c{{$key+1}}" role="tab" data-toggle="tab">
      {{$category->name}}
    </a>
  </li>
@endforeach

{{$key+1}} in my example because in PHP iterator starts at 0.

Solution:2

In Laravel 5.3 you can use The Loop Variable, $loop->iteration for concrete situation. https://laravel.com/docs/5.3/blade#the-loop-variable

Exapmle:

@foreach ($questions as $question)
    <tr>
        <th scope="row">{{ $loop->iteration }}</th>
        <td>{{ $question->question }}</td>
        <td>{{ $question->category_id }}</td>
    </tr>
@endforeach