Re: mysql_num_rows error
| From: | Jonathan Duncan | Date: | Tue, 08 Oct 2002 15:54:10 +0000 |
| Subject: | Re: mysql_num_rows error | ||
| References: | 1 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-119284@lists.php.net to get a copy of this message | ||
Omar,
I would first take the select statement and try running it in mysql to make
sure it actually runs (substituting a valid value for the variable of
course). Then if it has problems you can see what error messages mysql
gives you.
Good Luck,
Jonathan Duncan
"Omar Campos" <omar_campos@compusoluciones.com> wrote in message
news:20021008145810.74985.qmail@pb1.pair.com...
> I have a file. I'll paste from line 32 to 34
>
> <?
> .....
> $sql = "select USUARIO from docente where USUARIO = '$usuario'";
> $result = mysql_query($sql, $link);
> if (mysql_num_rows($result) == 1) { // line 34
> ....
> ?>
>
> I get the next warning:
> Warning: mysql_num_rows(): supplied argument is not a valid MySQL result
> resource in /home/olimpiad/public_html/base/alta1.php on line 34
>
> I'm running the script on a linux server.
> could someone help me.
> Thank you.
>
>