Просмотр файла app/database/migrations/20161216115501_create_bank_table.php

<?php

use Phinx\Migration\AbstractMigration;

class CreateBankTable extends AbstractMigration
{
    /**
     * Migrate Change.
     */
    public function change()
    {
        $table = $this->table('bank', ['collation' => 'utf8mb4_unicode_ci']);
        $table->addColumn('user', 'string', ['limit' => 20])
            ->addColumn('sum', 'integer', ['signed' => false, 'default' => 0])
            ->addColumn('oper', 'integer', ['signed' => false, 'default' => 0])
            ->addColumn('time', 'integer')
            ->addIndex('user', ['unique' => true])
            ->create();
    }
}