RE: [PHP] Help me learn! with an explanation of these two functions.
| From: | Steve Jackson | Date: | Thu, 07 Nov 2002 08:28:35 +0000 |
| Subject: | RE: [PHP] Help me learn! with an explanation of these two functions. | ||
| References: | 1 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-123120@lists.php.net to get a copy of this message | ||
Finally I have it!
Cheers to all that helped. I was querying twice when I didn't need to
and as Jason said not doing anything with the extracted information.
This code works and displays data nicely.
function get_order_numbers()
{
$conn = db_connect();
$query = "select * from orders, email where orders.orderid =
email.orderid and email.checked='no'";
$result = mysql_query($query) or die("Error: cannot select
orderid<BR>$query<BR>".mysql_error());
while( $row = mysql_fetch_array($result))
{
extract($row);
if (is_array($row))
//print_r($row);
{
//echo "tests and ";
echo $row["orderid"];
echo $row["ship_name"];
}
}
}
Steve Jackson
Web Developer
Viola Systems Ltd.
http://www.violasystems.com
stephen.jackson@violasystems.com
Mobile +358 50 343 5159
> -----Original Message-----
> From: Jason Wong [mailto:php-general@gremlins.com.hk]
> Sent: 7. marraskuuta 2002 10:06
> To: php-general@lists.php.net
> Subject: Re: [PHP] Help me learn! with an explanation of
> these two functions.
>
>
> On Thursday 07 November 2002 15:15, Steve Jackson wrote:
> > My second query still doesn't return anything? Even with $orderid =
> > $row removed as Jason suggested.
>
> What exactly do you mean by "doesn't return anything"?
>
> a) Does the second query fail?
> b) Do you get any errors?
>
> If no to both (a) and (b) then your query succeeded.
>
> Now, your code below as-is does not do anything with the 2nd
> query results.
> You've only used extract() on it, which by itself is not much
> use, unless you
> use the variables that has been extracted. Read my previous
> post about what
> extract() does (and read the manual for heaven's sake)
>
> Also make liberal use of print_r() to see what values your
> variables contain
> at different stages of your program.
>
> > This is my current function.
> >
> >
> > function get_order_numbers()
> > {
> > $conn = db_connect();
> > $query = "select orders.orderid from orders, email where
> > orders.orderid = email.orderid and email.checked='no'"; $result =
> > mysql_query($query) or die("Error: cannot select
> > orderid<BR>$query<BR>".mysql_error());
> > while( $row = mysql_fetch_array($result))
> > {
> > extract($row);
> > //$orderid = $row;
> > print_r($row);
> > $query2 = "SELECT * FROM orders WHERE orderid=\"$orderid\"";
> > $result2 = mysql_query($query2) or die("Error: cannot fetch
> > order<BR>$query2<BR>".mysql_error());
> > extract(mysql_fetch_array($result2));
> > }
> > }
>
> --
> Jason Wong -> Gremlins Associates -> www.gremlins.com.hk
> Open Source Software Systems Integrators
> * Web Design & Hosting * Internet & Intranet Applications
> Development *
>
> /*
> One Bell System - it works.
> */
>
>
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