$num_rows = -1;
if (!$result || mysql_err_no($result) != 0)
{
$num_rows = mysql_num_rows($result);
}
if ($num_rows >-1){
//do something here
}
Don't you have that backwards?
If there is a result && there is no error, do the num_rows.
if ($result && mysql_err_no($result) == 0) {
$num_rows = mysql_num_rows($result);
}
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