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Willin Kan的反垃圾评论代码

//Willin Kan的反垃圾评论代码
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D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'] = "[ 判断这是 Spam! ]\n". $_POST['spam_confirmed'];
}
return $comment;
}
}
$anti_spam = new anti_spam();

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