supplied argument not valid

Codewalkers Forums Sponsor:

November 21st, 2003, 02:31 AM

DorkRawk

Join Date: Apr 2007

Posts: 173

Time spent in forums: < 1 sec
Reputation Power: 2

supplied argument not valid

I get this warning when I call a function from one page, but not from another. Any ideas what could cause this to happen on one page but not the other?

Warning: mysql_num_rows(): supplied argument is not a valid MySQL result resource in /home/midwests/www/www/forum/funcs.small.php on line 562

November 21st, 2003, 03:05 AM

nazly

Codewalkers Beginner (1000 - 1499 posts)

Join Date: Apr 2007

Location: Colombo,SriLanka

Posts: 1,325

Time spent in forums: 20 m 18 sec
Reputation Power: 3

RE: supplied argument not valid

As the error states you are not passing a valid result identifier to the mysql_num_rows() function. This could probably happen if you have an error in your SQL statement.

eg:

php Code:

Original - php Code
$query="SELECT......";//An SQL statement $result=mysql_query($query); //$result will have the result identifer on success echo mysql_num_rows($result);

 
$query="SELECT......";//An SQL statement
$result=mysql_query($query);
//$result will have the result identifer on success
echo mysql_num_rows($result);

To figure out the try using die() to print out the mysql error

php Code:

Original - php Code
$query="SELECT......";//An SQL statement $result=mysql_query($query) or die(mysql_error()); echo mysql_num_rows($result);

 
$query="SELECT......";//An SQL statement
$result=mysql_query($query) or die(mysql_error());
echo mysql_num_rows($result);

Viewing: Codewalkers Forums > Other Technologies > Database Help > supplied argument not valid

« Previous Thread | Next Thread »

Thread Tools	Search this Thread
Email this Page	Search this Thread: Advanced Search
Display Modes	Rate This Thread
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode	Rate This Thread:

Posting Rules
You may not post new threads You may not post replies You may not post attachments You may not edit your posts vB code is On Smilies are On [IMG] code is On HTML code is Off

View Your Warnings | New Posts | Latest News | Latest Threads | Shoutbox

Forum Jump