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针对WordPress站点的垃圾评论依旧如潮水般，昨天倡萌在给自留地更换新版本主题后，忘记开启主题内置的垃圾评论拦截功能，没想到就半个小时，就有几十条垃圾评论！所以，今天的主要话题还是如何防范垃圾评论。
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。
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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'); |
