Question

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How to get the id of a row i've just inserted php/mysql

I was wondering what’s the most efficient way of inserting something and selecting it’s ID property at the same time?

For example, I have a table with auto incrementing primary ID column. I insert an item into that table and I need to know the autoincremented ID for use with another table.

Right now, what I do is:

1. INSERT INTO table1 the data
2. SELECT FROM table1 the ID
3. INSERT INTO table2 another set of data along with ID.

Answer 1

You can do this

INSERT INTO foo (auto,text)
    VALUES(NULL,'text');         --generate ID by inserting NULL
INSERT INTO foo2 (id,text)
    VALUES(LAST_INSERT_ID(),'text');  --use ID in second table

src: http://dev.mysql.com/doc/refman/5.0/en/getting-unique-id.html