laravel实现敏感词汇过滤

最近项目有需求，要对用户的签名，回复进行敏感词检测，然后搜到了一个好用的扩展，分享给大家。

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

通过 composer 进行安装：

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1	composer require lustre/php-dfa-sensitive

然后在 app 目录下创建 Services ，并添加 SensitiveWords.php

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<?php   namespace App\Services;   use DfaFilter\SensitiveHelper;   class SensitiveWords {     protected static $handle = null;       private function __construct()     {     }       private function __clone()     {     }       /**      * 获取实例      */     public static function getInstance($word_path = [])     {         if (!self::$handle) {               //默认的一些敏感词库             $default_path = [                 storage_path('dict/bk.txt'),                 storage_path('dict/fd.txt'),                 storage_path('dict/ms.txt'),                 storage_path('dict/qt.txt'),                 storage_path('dict/sq.txt'),                 storage_path('dict/tf.txt'),             ];               $paths = array_merge($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);     } }

然后我们就可以在项目中，使用 SensitiveWords::getBadWord() 来获取文本中是否有敏感词。

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$bad_word = SensitiveWords::getBadWord($content); if (!empty($bad_word)) {     throw new \Exception('包含敏感词:' . current($bad_word)); }

在 storage 目录下创建 dict 目录存放敏感词词库，bk.txt .....等等，这些词库都是我在网上下载的。

下载地址：

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1	https://download.csdn.net/download/jkko123/12066066