小编bil*_*sek的帖子

我有 2 个 MySQL 表

表#1 - 容器：

container_id INT (PK AI)
start_time DATETIME

表#2 - 预订

reservation_id INT (PK AI) 
reservation_time DATETIME
container_id INT (FK)

PHP代码：

mysqli_query($dbc,'SET AUTOCOMMIT=0');
mysqli_query($dbc,'START TRANSACTION');

$q1 = "INSERT INTO container (start_time) VALUES
      ('2012-07-03 11:00:00')";
$q2 = "INSERT INTO reservation (reservation_time, container_id) VALUES
      ('2012-07-03 11:00:00', LAST_INSERT_ID())";

$r1 = mysqli_query($dbc, $q1);
$r2 = mysqli_query($dbc, $q2);

if ($r1 && r2){
    mysqli_query($dbc, 'COMMIT');
} else {
    mysqli_query($dbc, 'ROLLBACK');
}

我做错了什么？$r2 返回假。LAST_INSERT_ID() 不起作用