note 18227 deleted from function.mysql-result by irc-html

The answer to my own question is: You must check your result with mysql_num_rows() before you try to use the result at all. I find that a lot of code out there actually doesn't seem to do this... If you choose not to first check each sql select query via mysql_num_rows(), you can expect to get warnings such as this: Warning: Unable to jump to row 0 on MySQL result ...