Laravel macro to split a name into a first_name and last_name

AppServiceProvider.php

<?php

namespace App\Providers;

use Illuminate\Support\ServiceProvider;
use Illuminate\Support\Str;

class AppServiceProvider extends ServiceProvider
{
   public function boot(): void
    {
        Str::macro('splitFullName', function (?string $fullName) {
            $result = [
                'firstName' => '',
                'lastName' => '',
            ];
            
            if (!$fullName) {
                return $result;
            }
            
            $nameParts = explode(' ', $fullName);

            $result['firstName'] = $nameParts[0] ?? '';
            
            if (count($nameParts) > 1) {
                $result['lastName'] = implode(' ', array_slice($nameParts, 1));
            }
            
            return $result;
        });
    }
}

Make sure to create a .stubs.php file at the root folder of your project that includes the following:

<?php

namespace Illuminate\Support
{
    class Str
    {
        public function splitFullName(string $name): array {}
    }
}

This will let your IDE catch the new method on Str::class class and provide intellisense.

Enjoy!