Warning: mysql_num_rows() supplied argument is not a valid MySQL result resource


Posted on 16th Feb 2014 07:03 pm by admin

This may be simple I just may need another pair of eyes..

When i get records back the below code works just fine, when I get 0 rows back it shows the warning below. As you can see I tried to code for it and you can see that the code works as it echo's my message but I want the warning to go away

Warning: mysql_num_rows(): supplied argument is not a valid MySQL result resource in show_coupon_list.php on line 224
No Coupons for this Catogory or Business. Please let us know about the Category that displayed no results so we can contact businesses for you!

Code: $cat_coupons = mysql_query("SELECT a.business_name, a.seq_id, a.state, a.city
FROM users a where a.seq_id = '$cat_coupons_seq_id'");

Code: $cat_num=mysql_num_rows($cat_coupons);
if ($cat_num > 0)
{
while ($row = mysql_fetch_array($cat_coupons))
{
$business_name = $row["business_name"];
$business_id = $row["seq_id"];
$state = $row["state"];
$city = $row["city"];
echo"<tr>
<td align = 'left'>&nbsp;&nbsp;<a href=show_coupon.php?business=".urlencode($business_name).">$business_name &nbsp;&nbsp;&nbsp; $city,$state </a></td>
</tr>";
}
}
else
echo"<tr>
<td>No Coupons for this Catogory or Business. Please let us know about the Category that
displayed no results so we can contact businesses for you!
</td>
</tr>";

No comments posted yet

Your Answer:

Login to answer
348 Like 5 Dislike
Previous forums Next forums
Other forums

Embed Video Problem
Hey, thanks for looking!

File to be embedded:

Code: <playlist version="1&q

'210010106140040100' == '210010106140040101'
Debugging this simple line of a PHP script

Code: if($a == $b){ }
I've found that with val

Inserting multiple records from single form
I've found a number of threads that deal with this issue, but I'm new to php and coding language so

Staff Induction System - No idea where to go from here!!!
Hi there, I'm pretty new to PHP and Mysql so could really do with being pointed in the right directi

How do I send data using an html link
Hi

If I have
<a href="main_file.php">

How do I send data t

Production of mango in processing industry
Hi,

We have one scenario ,company is in process industry,they are manufacturing MANGO pul

Renaming a file that a user uploads to site?
My site allows for registered users to upload images to the site under their own gallery. Currently

Reditecting pages based on logic
Newbie here, apologies in advance!

I am trying to use the header function to forward one of a

Executing an exe
Hi. I have some bizarre problem with exec (other any other method) to launch exe's. I am making a ga

Opening Multiple Files/Links in Order.
I want to open links in order/one-by-one and check each for a specific string.

Example:
I

Sign up to write
Sign up now if you have flare of writing..
Login   |   Register
Follow Us
Indyaspeak @ Facebook Indyaspeak @ Twitter Indyaspeak @ Pinterest RSS



Play Free Quiz and Win Cash