mysql和php自动增加id并插入数据

Question

I have two database tables in my sql database. First one is personal table and other one is payment details. Auto inctiment id in personal table is used as foreign key of payment details. i have to insert data to two this table at a time.normaly I should insertdata to personal table and get auto increment id of this row and insert data to payment data table. but i have some problems.

• I can't get auto increment id using my sql SELECT query easily.because there are more colums to check through WHERE.
• get last insert id is not perfect way. because other user can insert another person's data while i'm accessing and i receive wrong id.

I have no good knowledge about this. help me !

Answer 1

I don't really know your structure, but the best best way here is to use transactions. Link: http://dev.mysql.com/doc/refman/5.7/en/commit.html .

START TRANSACTION;
INSERT /* Your insertion into personalTable */
SELECT @lastId:=LAST_INSERT_ID();
INSERT INTO paymentTable SET (user_id) VALUES (@lastId);
COMMIT;

Also you need to set your TRANSACTION ISOLATION LEVEL to SERIALIZABLE to prevent any transaction violations.

UPD. Thanks @Drew to make me dig deeper.