关于phpwind敏感词模糊匹配的修改方法

phpwind的敏感词过滤模块感觉不太靠谱，基本用空格，其它字符就很容易破解，参考了discuz，修改了phpwind敏感词过滤模块代码，支持模糊匹配；修改文件lib/filter/filterutil.class.php 注释原来的match方法，替换如下方法，原始方法大概看下，应该是PW自己发明的算法，感觉不好使，改用了正则匹配，修改前记得备份。使用方法：比如要匹配“军车”，可以这么用，敏感词写入“军{2}车”,那么类似“军XX车”的字符都能被匹配到，具体可参考discuz.测试版本：phpwind 8.5优化版。猜测8.0-8.7应该都适用

<?php
	function match($ifUppCase,$s) {
    	$ret = array();
        include_once(D_P."data/bbscache/wordsfb.php");
        $replacedb = $wordsfb + $replace + $alarm;
        //clear html &nbsp; and fix charset
        $s = str_replace( "&nbsp;", " ",$s);
     	$s = iconv("gbk","utf-8//IGNORE",$s);
        if ($replacedb) {
            foreach ($replacedb as $key => $value) {
            	$tmp_key =  $key;
            	$key = stripcslashes($key);
            	$key = preg_replace("/\\\{(\d+)\\\}/", ".{0,\\1}",preg_quote($key, '/'));
            	$key = iconv("gbk","utf-8//IGNORE",$key);
                $result  = preg_match_all("/($key)/i",$s,$match);
                if($result){
                	$ret[0] = iconv("utf-8","gbk//IGNORE",$match[0][0]);
                	$words_type =  array('wordsfb' =>1,'replace' => 0.8,'alarm' => 0.6);
                	foreach ($words_type as $w_type => $w_weight) {
                		if(array_key_exists($tmp_key,$$w_type))
                			$ret[1] = $w_weight;
                	}
                	$ret = array($ret);
                }
            }
        }
        return $ret;
	}
?>