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php實(shí)現(xiàn)過濾敏感詞，具體代碼如下：

<?php

/**

* Created by JetBrains PhpStorm.

* User: lsl

* Date: 13-8-28

* Time: 下午2:58

* 敏感詞過濾工具類

* 使用方法

* echo FilterTools::filterContent("你媽的我操一色狼雜種二山食物","*",DIR."config/word.txt",$GLOBALS["p_memcache"]["bad_words"]);

*/

class FilterTools {

public static $keyword = array();

/**

* 從文件中加載敏感詞

* @param $filename

* @return array

*/

static function getBadWords($filename){

$file_handle = fopen($filename, "r");

while (!feof($file_handle)) {

$line = trim(fgets($file_handle));

array_push(self::$keyword,$line);

}

fclose($file_handle);

return self::$keyword;

}

/**

* @param $content 待處理字符串

* @param $target 替換后的字符

* @param $filename 敏感詞配置文件

* @param $memconfig 緩存配置文件

* @return 處理后的字符串

*/

static function filterContent($content,$target,$filename,$memconfig){

$mem = new BadWordsMemcache($filename,$memconfig);

$keyword = $mem->getList();

if(count($keyword) == 0){

$keyword = self::getBadWords($filename);

}

return strtr($content, array_combine( $keyword, array_fill(0,count($keyword), $target)));

}

}

/**

* 敏感詞緩存處理類

* Class BadWordsMemcache

* User: lsl

*/

class BadWordsMemcache{

var $memcache;

var $key;

var $list;

var $filename;

function __construct($filename,$memconfig) {

$this->filename = $filename;

if(!class_exists("P_Memcache")){

require_once DIR."lib/memcache.class.php";

}

$this->key = "bad_words";

$this->memcache = new P_Memcache();

$this->memcache->config = $memconfig;

$this->memcache->connect();

print_r($this->memcache);

$this->init();

}

function __destruct() {

$this->memcache->close();

}

/**

* 初始化

* @param bool $isReset

*/

function init($isReset = false){

$this->list = $this->memcache->get($this->key)?$this->memcache->get($this->key):array();

if(count($this->list)==0 || $isReset){

$this->list = filterTools::getBadWords($this->filename);

$this->memcache->set($this->key, $this->list);

$log_data = Log::formatData($this->list);

Log::logWrite($log_data, 'bad.words','init');

}

}

/**

* 獲取列表

* @return mixed

*/

function getList(){

return $this->list;

}

}

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