oficial/app/resources/database/seeds/Provincia.php

<?php

declare(strict_types=1);

use Phinx\Seed\AbstractSeed;

class Provincia extends AbstractSeed
{
    public function getDependencies(): array
    {
        return [
            'Region',
        ];
    }

    /**
     * Run Method.
     *
     * Write your database seeder using this method.
     *
     * More information on writing seeders is available here:
     * https://book.cakephp.org/phinx/0/en/seeding.html
     */
    public function run(): void
    {
        $this->execute('SET unique_checks=0; SET foreign_key_checks=0;');

        $table = $this->table('provincia');
        $table->truncate();

        $filename = implode(DIRECTORY_SEPARATOR, [getcwd(), 'resources', 'database', 'seeds', 'provincia.csv']);
        $dataRows = explode(PHP_EOL, trim(file_get_contents($filename)));
        $data = array_map(fn($row) => explode(';', $row), $dataRows);
        $columns = array_shift($data);
        $columns = array_map(function($column) {
            if (str_contains($column, 'id')) {
                return 'id';
            }
            if (str_contains($column, 'region')) {
                return 'region';
            }
            return $column;
        }, $columns);
        $data = array_map(function ($row) use ($columns) {
            return array_combine($columns, $row);
        }, $data);

        $table->insert($data)->save();

        $this->execute('SET unique_checks=1; SET foreign_key_checks=1;');
    }
}