Question

I have the following code:

if ($user) {
        $highscore = mysql_result(mysql_query("SELECT Score FROM HighScore WHERE fbID = $user"),0);
        if (empty($highscore)) { //if no result
            echo '<div id="uhs">0</div>';
        } else { 
            echo '<div id="uhs">'. $highscore .'</div>';
        }
    } else {
        echo '<div id="uhs">0</div>';
    }

When I get no result from the db (because there is no Score), it should echo: echo '<div id="uhs">0</div>'; but it doesn’t. Instead I get the error: MySQL error: Unable to jump to row 0 on MySQL result index 8. I thought using: if (empty($highscore)) should take care of it when having no result.

What am I doing wrong and how to fix it, it works fine when there is a Score in the db

Many thanks

Answer 1

The function mysql_num_rows() is used to check if mysql_query returned any result.

$highscore = mysql_query("SELECT Score FROM HighScore WHERE fbID = $user");
if (mysql_num_rows($highscore) == 0) { 
    // No result
} else {
    // Show result
}