方法一
此方法依旧是来自 Willin Kan 大师(可惜他已经退出WordPress圈),折腾很简单,直接将下面的代码放到主题的functions.php文件的最后一个 ?>前面即可:
代码如下 | 复制代码 |
// 垃圾评论拦截 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?热? ". $spamcom. "n -- 记录成功 --"; } } function sink( $comment ) { if ( !empty($_POST['spam_confirmed']) ) { if ( in_array( $comment['comment_type'], array('pingback', 'trackback') ) ) return $comment; //方法一: 直接挡掉, ? die(); 前面两斜线?h除即可. die(); //方法二: 标记为 spam, 留在资料库检查是否误判. //add_filter('pre_comment_approved', create_function('', 'return "spam";')); //$comment['comment_content'] = "[ 小墙判断这是 Spam! ]n". $_POST['spam_confirmed']; } return $comment; } } $anti_spam = new anti_spam(); |
这个方法可以阻止98%以上的垃圾评论,当然了,倡萌还建议你审核第一次提交的评论人的评论,设置审核后才显示,如果遇到垃圾评论,将其email、IP、网址等添加到黑名单即可,下面是倡萌目前的评论设置。你可以在WP后台-设置-讨论下设置:
方法二
自动拒绝包含特定关键词的垃圾评论
将下面的代码添加到主题的functions.php文件,自己根据需要,修改 $ bad_comment_content 数组的内容,任何包含在$ bad_comment_content 数组内的字符,将会被自动拒绝留言
代码如下 | 复制代码 |
function in_comment_post_like($string, $array) { foreach($array as $ref) { if(strstr($string, $ref)) { return true; } } return false; } function drop_bad_comments() { if (!empty($_POST['comment'])) { $post_comment_content = $_POST['comment']; $lower_case_comment = strtolower($_POST['comment']); $bad_comment_content = array( 'viagra', 'hydrocodone', 'hair loss', 'xanax', 'tramadol', 'russian girls', 'russian brides', 'lorazepam', 'adderall', 'dexadrine', 'no prescription', 'oxycontin', 'without a prescription', 'sex pics', 'family incest', 'online casinos', 'online dating', 'cialis', 'best forex', 'amoxicillin' ); if (in_comment_post_like($lower_case_comment, $bad_comment_content)) { $comment_box_text = wordwrap(trim($post_comment_content), 80, "n ", true); $txtdrop = fopen('/var/log/httpd/wp_post-logger/nullamatix.com-text-area_dropped.txt', 'a'); fwrite($txtdrop, " --------------n [COMMENT] = " . $post_comment_content . "n --------------n"); fwrite($txtdrop, " [SOURCE_IP] = " . $_SERVER['REMOTE_ADDR'] . " @ " . date("F j, Y, g:i a") . "n"); fwrite($txtdrop, " [USERAGENT] = " . $_SERVER['HTTP_USER_AGENT'] . "n"); fwrite($txtdrop, " [REFERER ] = " . $_SERVER['HTTP_REFERER'] . "n"); fwrite($txtdrop, " [FILE_NAME] = " . $_SERVER['SCRIPT_NAME'] . " - [REQ_URI] = " . $_SERVER['REQUEST_URI'] . "n"); fwrite($txtdrop, '--------------**********------------------'."n"); header("HTTP/1.1 406 Not Acceptable"); header("Status: 406 Not Acceptable"); header("Connection: Close"); wp_die( __('bang bang.') ); } } } add_action('init', 'drop_bad_comments'); |
今天再补充下,自动将包含长链接的评论标记为垃圾评论。
将下面的代码添加到主题的 functions.php 文件即可:
代码如下 | 复制代码 |
function rkv_url_spamcheck( $approved , $commentdata ) { return ( strlen( $commentdata['comment_author_url'] ) > 50 ) ? 'spam' : $approved; } add_filter( 'pre_comment_approved', 'rkv_url_spamcheck', 99, 2 ); |
注意看第二行的 50 ,根据自己的需要修改这个数值。如果你希望将所有带有链接(不管是否是长链接)的评论内容都自动标记为垃圾评论,将 50 改为 1 即可。
时间: 2024-10-11 01:15:51