$vote_count = $wpdb->get_var($wpdb->prepare("SELECT votes FROM wp_mytable WHERE product = %s AND
                              company = %s", $product, $company));
        if(is_int($vote_count)){
            $html = \'<a href="#" class="vote_for_doc">
            Vote here</a> (<span class="vote-count">\' . $vote_count . \'</span> Votes for \' . $product . \' and \' . $company . \')\';
        }else{
            if(is_string($vote_count)){
                $html = \'$vote_count is a string in the database<p>\' . print_r($vote_count);
            }if(is_array($vote_count)){
                $html = \'$vote_count is an array in the database<p>\' . print_r($vote_count);
            }else{
                $html = \'$vote_count is not a string or an integer<p>\' . print_r($vote_count);
            }
        }

$vote\\u count不是字符串或整数

1.