获取某一个数据库的所有表名

function is_create_table()
{
    $table_name_arr = Db::query("SELECT table_name FROM information_schema.TABLES WHERE TABLE_SCHEMA='fastadmin'");
    $table_name_arr = array_column($table_name_arr, 'table_name');
    $push_table_name = 'jd_wc_pumping_' . date('Y');
    if (!in_array($push_table_name, $table_name_arr)) {
        Db::execute("CREATE TABLE IF NOT EXISTS $push_table_name LIKE jd_wc_pumping_2017");
    }
}