Laravel MySQL Point Cast class

App\Casts\Point.php

<?php

namespace App\Casts;

use Illuminate\Support\Facades\DB;
use Illuminate\Contracts\Database\Eloquent\CastsAttributes;

// todo: make it even better by implementing a Point class and working with that

class Point implements CastsAttributes
{
    public function get($model, $key, $value, $attributes)
    {
        // https://stackoverflow.com/questions/37467050/convert-mysqls-point-to-text-in-php
        return unpack('x4/corder/Ltype/dlng/dlat', $value);
    }

    public function set($model, $key, $value, $attributes)
    {
        return DB::raw(sprintf('POINT(%f, %f)', $value['lng'], $value['lat']));
    }
}

My example for PHP 8 and MySQL 8 with SRID 4326:

$table->geography(column: 'coordinates', subtype: 'point', srid: 4326);

<?php

declare(strict_types=1);

namespace App\Casts;

use Illuminate\Contracts\Database\Eloquent\CastsAttributes;
use Illuminate\Contracts\Database\Query\Expression;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Facades\DB;

class PointCast implements CastsAttributes
{
    /**
     * Cast the given value.
     *
     * @param array<string, mixed> $attributes
     */
    public function get(Model $model, string $key, mixed $value, array $attributes): array
    {
        if ( ! is_string(value: $value)) {
            return [
                'latitude' => 0.0,
                'longitude' => 0.0,
            ];
        }

        $coordinates = unpack(format: 'x4/corder/Ltype/dlng/dlat', string: $value);

        if ($coordinates === false) {
            return [
                'latitude' => 0.0,
                'longitude' => 0.0,
            ];
        }

        return [
            'latitude' => $coordinates['lat'],
            'longitude' => $coordinates['lng'],
        ];
    }

    /**
     * Prepare the given value for storage.
     *
     * @param array<string, mixed> $attributes
     */
    public function set(Model $model, string $key, mixed $value, array $attributes): Expression
    {
        if ( ! is_array(value: $value)) {
            $value = [
                'latitude' => 0.0,
                'longitude' => 0.0,
            ];
        }

        $lat = $value['latitude'] ?? 0.0;
        $lng = $value['longitude'] ?? 0.0;

        return DB::raw(value: "ST_GeomFromText('POINT({$lat} {$lng})', 4326)");
    }
}