代码实现 WordPress 反垃圾评论功能

/// Anti-Spam class anti_spam { function anti_spam() { if ( !current_user_can('level_0') ) { add_action('template_redirect', array($this, 'w_tb'), 1); add_action('init', array($this, 'gate'), 1); add_action('preprocess_comment', array($this, 'sink'), 1); } } function w_tb() { if ( is_singular() ) { ob_start(create_function('$input','return preg_replace("#textarea(.*?)name=([\"\'])comment([\"\'])(.+)/textarea>#", "textarea$1name=$2w$3$4/textarea><textarea name=\"comment\" cols=\"100%\" rows=\"4\" style=\"display:none\"></textarea>",$input);') ); } } function gate() { if ( !empty($_POST['w']) && empty($_POST['comment']) ) { $_POST['comment'] = $_POST['w']; } else { $request = $_SERVER['REQUEST_URI']; $referer = isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '隐瞒'; $IP = isset($_SERVER["HTTP_X_FORWARDED_FOR"]) ? $_SERVER["HTTP_X_FORWARDED_FOR"] . ' (透过代理)' : $_SERVER["REMOTE_ADDR"]; $way = isset($_POST['w']) ? '手动操作' : '未经评论表格'; $spamcom = isset($_POST['comment']) ? $_POST['comment'] : null; $_POST['spam_confirmed'] = "请求: ". $request. "\n来路: ". $referer. "\nIP: ". $IP. "\n方式: ". $way. "\n內容: ". $spamcom. "\n -- 记录成功 --"; } } function sink( $comment ) { if ( !empty($_POST['spam_confirmed']) ) { if ( in_array( $comment['comment_type'], array('pingback', 'trackback') ) ) return $comment; //方法一: 直接挡掉, 將 die(); 前面两斜线刪除即可. die(); //方法二: 标记为 spam, 留在资料库检查是否误判. //add_filter('pre_comment_approved', create_function('', 'return "spam";')); //$comment['comment_content'] = "[ 小墙判断这是 Spam! ]\n". $_POST['spam_confirmed']; } return $comment; } } $anti_spam = new anti_spam();