Laravel 5.5 call Controller function from blade view with parameter

@Ali is obviously correct, and I suggest you accept his answer.

I'd like to add, though, that there's a service injection directive as well which was built for this exact purpose, and which is a little cleaner to use.

@inject('provider', 'App\Http\Controllers\ServiceProvider')

<span class="text-bold">
    {{ $provider::getLowestPrice($product_cat->id) }}
</span>

Docs: https://laravel.com/docs/5.5/blade#service-injection

you can't use use keyword inside method

you can write the full class path , like this

 <span class="text-bold">
   @php
    echo App\Http\Controllers\ServiceProvider::getLowestPrice($product_cat->id);
   @endphp
 </span>