How do I get the last inserted ID of a MySQL table in PHP?

Question

I have a table into which new data is frequently inserted. I need to get the very last ID of the table. How can I do this?

Is it similar to SELECT MAX(id) FROM

Answer 1

Using MySQLi transaction I sometimes wasn't able to get mysqli::$insert_id, because it returned 0. Especially if I was using stored procedures, that executing INSERTs. So there is another way within transaction:

insert_id;

    $result = $instance->query('SELECT LAST_INSERT_ID();');

    if($instance->errno)return false;

    list($buffer) = $result->fetch_row();

    $result->free();

    unset($result);

    return $buffer;
}

?>