www.x-motion.cn/Application/Common/Server/SensitiveServer.class.php

<?php
/**
 * 过滤敏感词服务
 */
namespace Common\Server;
use Common\Cache\RedisCache;

class SensitiveServer {

    /**
     * 敏感词过滤
     * @param $comment
     * @return mixed|string
     */
    public function filter_word($comment) {
        //$original_comment = $comment;
        //评论过滤特殊字符及空格后判断
        $strmap = array(
            '/à|á|å|â|ä/' => 'a',
            '/è|é|ê|ẽ|ë/' => 'e',
            '/ì|í|î/' => 'i',
            '/ò|ó|ô|ø/' => 'o',
            '/ù|ú|ů|û/' => 'u',
            '/ç|č/' => 'c',
            '/ñ|ň/' => 'n',
            '/ľ/' => 'l',
            '/ý/' => 'y',
            '/ť/' => 't',
            '/ž/' => 'z',
            '/š/' => 's',
            '/æ/' => 'ae',
            '/ö/' => 'oe',
            '/ü/' => 'ue',
            '/Ä/' => 'Ae',
            '/Ü/' => 'Ue',
            '/Ö/' => 'Oe',
            '/ß/' => 'ss',
            '/&nbsp;/'=>' ',
            '/　/'=>'',
            '/～|·|！|@|#|￥|%|…|&|×|（|）|-|\+|=|『|【|』|】|、|:|；|“|”|\'|《|，|》|。|？|\/|—|_|：|√|＜|°|丶|＞|－|★|｜|│|‖|ˇ/'=>' ',
            '/[^\w\s\x80-\xff]/' => ' '
        );
        $comment = trim($comment);
        $comment = preg_replace(array_keys($strmap), array_values($strmap), $comment);
        $redis = new RedisCache();
        $sensitive_word_data = $redis->get('x_sensitive_word');
        if(empty($sensitive_word_data)) {
            $data  = M('sensitive_word')->select();
            $sensitive_word_data = serialize($data);
            $redis->set('x_sensitive_word',$sensitive_word_data,2678400);
            $sensitive_word_data = $redis->get('x_sensitive_word');
        }
        $tmp_data =  unserialize($sensitive_word_data);
        //die(json_encode($tmp_data));
        foreach($tmp_data as $value) {
            if(strpos($comment, $value['word'])!==false) {
                $comment = str_replace($value['word'], '***', $comment);
            }
        }
        return $comment;
    }
}