On Friday 30 June 2006 14:37, Brian Dunning wrote:
> I have a table where I want to update each record with today's date
> as it's hit, or add the record if it's not in there:
>
> +------+-----------------+------------+
>
> | id | creation_date | last_hit |
>
> +------+-----------------+------------+
>
> I'm trying to do this with a minimum of hits to the db, so rather
> than first searching to see if a matching record is in there, I
> thought I'd just go ahead and update the matching record, check to
> see if it failed, and if it failed then add a new one, like this:
>
> $id = $_GET['id'];
> // Update
> $query = "update table set last_hit=NOW() where id='$id'";
> $result = mysql_query($query);
> // Add
> if(the update failed) {
> $query = "insert into table (id,creation_date,last_hit) values
> ('$id',NOW(),NOW())";
> $result = mysql_query($query);
> }
>
> What's the fastest way to check if the update failed?
This is from the php.net docs.
Return Values
For SELECT, SHOW, DESCRIBE or EXPLAIN statements, mysql_query() returns a
resource on success, or FALSE on error.
For other type of SQL statements, UPDATE, DELETE, DROP, etc, mysql_query()
returns TRUE on success or FALSE on error.
So if($result == 0){
do something;
}
--
Paul Nowosielski
Webmaster
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