table('admin_role', [ 'engine' => 'InnoDB', 'comment' => '后台角色', 'collation' => 'utf8mb4_general_ci', ]); if ($table->exists()) { $table->drop(); } $table ->addColumn('name', 'string', ['length' => 100, 'default' => '', 'comment' => '角色名']) ->addColumn('create_time', 'datetime', ['null' => 1, 'comment' => '创建时间']) ->addColumn('update_time', 'datetime', ['null' => 1, 'comment' => '更新时间']) ->addColumn('delete_time', 'datetime', ['null' => 1, 'comment' => '删除时间']) ->create(); } }