laravel blade variable access in php code example

Example 1: laravel 5.4 forelse

@forelse ($users as $user)
    <li>{{ $user->name }}</li>
@empty
    <p>No users</p>
@endforelse

Example 2: laravel blade @if 3 varabile

@if(is_null($key['p3']))
        {{--*/$p3 = $key['p3']/*--}}
    @else
        {{ 0 }}
    @endif
    @if(is_null($key['wabku']))
        {{--*/$wabku = $key['wabku']/*--}}
    @else
        {{ 0 }}
    @endif
    <td class="tg-rv4w" width="5%">
        {{ number_format($p3 - $wabku,0,',','.') }}
    </td>
    
    @php
    $p3 = $key['p3']
    @endphp