Question

I’m developing a PHP web app using a MySQL database.

I’m wondering what is the best way to find out what primary key (or any other autoincrement field) did a row receive after insertion.

Something that returns the full row as a result is also pretty good, since I also wanted to know about default values assigned to fields I didn’t explicitly set.

All help is appreciated.

— edit

So, I’m using an in-house framework that abstracts away the actual database functions, so I can’t use the connection-specific “mysql_last_insert_id”, and the “select last_insert_id” query, AFAIK, would be affected by other database connections, especially considering that the framework I’m using opens new connections for every query.

Guess this is a framework problem and you can’t help me. If INSERT INTO had a “return inserted rows” mode, though, that would be nice.

Answer 1

MySQL provides a convenient way to answer this exact question:

mysql> SELECT LAST_INSERT_ID()

The mysql_* functions come with a wrapper for that: check mysql_insert_id

The mysql driver for PDO gives the same:

$pdo->exec('insert into ...');
$lastId = $pdo->lastInsertId();