Wouldn't this:
$id = mysql_insert_id();
$query = "UPDATE tablename SET id=" . ($id + 1);
$result = mysql_query($query);
Be a little simpler.
But like I said, I'm confused over the need for this in the first place,
seeing as how an "auto_incremented" primary key is self-descriptive. or are
you saving this somewhere else in the DB?
On 7/19/06, chris smith <dmagick@xxxxxxxxx> wrote:
On 7/19/06, Renne Rocha <rennerocha@xxxxxxxxx> wrote:
> Hello,
>
> I am using the ADODB class to connect to a MySQL server. I am trying
> to generate an ID with the method GenID(), but when I tried this:
>
> $id = $db->GenID('table');
>
> The value of $id is equal to zero. I know that MySQL doesn't use
> sequences like PostgreSQL does (I've used this code in a PostgreSQL
> project), but in the documentation of ADODB I saw that it is possible
> to use it. Is there any trick about how to make it work?
You'll need to insert a value into the table first, then you can do:
$query = "UPDATE tablename SET id=LAST_INSERT_ID(id+1)";
$result = mysql_query($query);
$id = mysql_insert_id();
This is in the mysql docs somewhere...
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