Need to loop through multiple Laravel models to do the same update on all of their results? In this example it's updating the address country id

migration_example.php

<?php

// Models to run through
$models = collect([
    'contact',
    'business',
]);

// Loop through the models
$models->each(function ($value, $key) use ($keys) {

    // Put together the namespace
    $model = 'App\\Models\\' . ucwords($value);

    // Get any result with country_id = 1
    $model = $model::where('country_id', 1)->get();

    // We have results?
    if ($model->count()) {

        // Loop through each result
        $model->each(function($child, $key) {
            $child->country_id = 2;
            $child->save();
        });

    }

});