Getting id of row just inserted into MySQL database

Question

I have my table columns set like this:

likes(id, like_message, timestamp)

id is the primary key that is auto incrementing. This is the SQL that I use to add a row:

$sql = "INSERT INTO `likes` (like_message, timestamp)
        VALUES ('$likeMsg', $timeStamp)";

Everything works, but now I need to throw back the id attribute of the newly inserted row. For example, if I insert a row and the id of that row is 13, I need to echo out 13 so my AJAX request can pick that up and use it.

Any help would be appreciated, as well as related code samples. Thanks :)

Answer 1

$id = mysql_insert_id();

http://php.net/manual/en/function.mysql-insert-id.php

Answer 2

This page will give you lots of good information on the problem:

MySQL: Getting unique ID

In PHP:

mysql_query("INSERT INTO foo(blah) values ('blee')");
echo mysql_insert_id();

In SQL:

INSERT INTO foo (blah) VALUES('blee');

LAST_INSERT_ID()   --now contains your last inserted id