PHP实现敏感词

扩展
https://github.com/FireLustre/php-dfa-sensitive

通过 composer 进行安装：

composer require lustre/php-dfa-sensitive

SensitiveWords.php

<?php

use DfaFilter\SensitiveHelper;

class SensitiveWords
{
protected static $handle = null;

private function __construct()
{
}

/**
 * 获取实例
 */
public static function getInstance($word_path = [])
{
    if (!self::$handle) {

        //默认的一些敏感词库
        $default_path = [
            //....敏感词文件路径 
        ];

        $paths = array_merge($default_path, $word_path);

        self::$handle = SensitiveHelper::init();

        if (!empty($paths)) {
            foreach ($paths as $path) {
                self::$handle->setTreeByFile($path);
            }
        }
    }
    return self::$handle;
}

/**
 * 检测是否含有敏感词
 */
public static function isLegal($content)
{
    return self::getInstance()->islegal($content);
}

/**
 * 敏感词过滤
 */
public static function replace($content, $replace_char = '', $repeat = false, $match_type = 1)
{
    return self::getInstance()->replace($content, $replace_char, $repeat, $match_type);
}

/**
 * 标记敏感词
 */
public static function mark($content, $start_tag, $end_tag, $match_type = 1)
{
    return self::getInstance()->mark($content, $start_tag, $end_tag, $match_type);
}

/**
 * 获取文本中的敏感词
 */
public static function getBadWord($content, $match_type = 1, $word_num = 0)
{
    return self::getInstance()->getBadWord($content, $match_type, $word_num);
}
}

进行测试

    $content="撒现场飞洒 改卷内幕xx";
    $bad_word = SensitiveWords::replace($content,"**");
    dump($bad_word);