verifica presenza record

[E.d.i.73]

prova in questo modo:

<?php
$query = "SELECT *
             FROM $db_name.quizgame
             WHERE $db_name.quizgame.id_user = $id_user ";
              $rq = mysql_query($query)
    if($rq)
        {
        if(mysql_num_rows($rq)!=0){

            echo 'user found';
        }
          else{
            echo 'user not found';

            $query = "INSERT INTO $db_name.quizgame (id_user, phrase, score) VALUES ('$id_user','$phrase','$score')";

            $rq = mysql_query($query);
            echo mysql_affected_rows();


        }

    }else{
        $report='query failed';
        echo mysql_error();
    }
?>