Summary of implementation methods for shielding and filtering specified keywords in PHP_PHP Tutorial

We often find that where we submit a reservation, there will be a lot of advertisements. Later, I wanted to make a function of blocking and filtering specified keywords. I searched for several methods and introduced them to everyone who needs to know. Friends can refer to it.

Things:
1. Write the keywords specifically in a text file, one per line. There is no limit to the number. Write as many as you want.
2. PHP reads the keyword text and stores it in an array
3. Traverse the keyword array and use the strpos function one by one to see if there are keywords in the content. If there are keywords, return true, if not, return false

The PHP code is as follows:

// Keyword filter function function keyWordCheck($content){

The code is as follows

代码如下

复制代码

/* PHP中用strpos函数过滤关键字 */ // 关键字过滤函数 function keyWordCheck($content){ // 去除空白 $content = trim($content); // 读取关键字文本 $content = @file_get_contents('keyWords.txt'); // 转换成数组 $arr = explode("n", $content); // 遍历检测 for($i=0,$k=count($arr);$i<$k;$i++){ // 如果此数组元素为空则跳过此次循环 if($arr[$i]==''){ continue; } // 如果检测到关键字，则返回匹配的关键字,并终止运行 if(@strpos($str,trim($arr[$i]))!==false){ //$i=$k; return $arr[$i]; } } // 如果没有检测到关键字则返回false return false; } $content = '这里是要发布的文本内容。。。'; // 过滤关键字 $keyWord = keyWordCheck($content); // 判断是否存在关键字 if($keyWord){ echo '你发布的内容存在关键字'.$keyWord; }else{ echo '恭喜！通过关键字检测'; // 往下可以进行写库操作完成发布动作。 }

Copy code

代码如下

复制代码

/** * 被禁止的关键字检测 * * @param string $string 要检测的字符串 * @param string $fileName 屏蔽关键字文件 * @return bool */ function banwordCheck( $string, $fileName ) { if ( !($words = file_get_contents( $fileName )) ){ die('file read error!'); } $string = strtolower($string); $matched = preg_match('/'.$words.'/i', $string, $result); if ( $matched && isset($result[0]) && strlen($result[0]) > 0 )  {   if ( strlen($result[0]) == 2 ){    $matched = preg_match('/'.$words.'/iu', $string, $result);   }    if ( $matched && isset($result[0]) && strlen($result[0]) > 0 ) {    return true;   }else{    return false;   }    }else{   return false;  } } $content = '测试关键字'; if ( banwordCheck($content, './banwords.txt') ){  echo "matched! "; }else{  echo "no match! "; }

/* Use strpos function to filter keywords in PHP */

// Remove white space $content = trim($content);

//Read keyword text

$content = @file_get_contents('keyWords.txt'); //Convert to array $arr = explode("n", $content); // Traversal detection for($i=0,$k=count($arr);$i<$k;$i++){ // If this array element is empty, skip this loop if($arr[$i]==''){ continue; } // If a keyword is detected, return the matching keyword and terminate the operation if(@strpos($str,trim($arr[$i]))!==false){ //$i=$k; return $arr[$i];

}

}

// Return false if no keyword is detected

return false;

} <🎜> $content = 'Here is the text content to be published. . . '; <🎜> // Filter keywords<🎜> $keyWord = keyWordCheck($content);<🎜> // Determine whether the keyword exists <🎜> if($keyWord){<🎜> echo 'The content you posted contains keywords'.$keyWord;<🎜> }else{<🎜> echo 'Congratulations! By keyword detection';<🎜> // Next, you can perform the library writing operation to complete the publishing action. <🎜> }<🎜> <🎜> <🎜> <🎜> <🎜>Example 2 (Note: The keyword file used in Chinese keyword filtering is utf-8 encoded<🎜>

The code is as follows<🎜>

Copy code<🎜> <🎜>

<🎜><🎜> /**<🎜> * Banned keyword detection<🎜> *<🎜> * @param string $string The string to be detected <🎜> * @param string $fileName Mask keyword file<🎜> * @return bool<🎜> ​*/<🎜> function banwordCheck( $string, $fileName )<🎜> {<🎜> if ( !($words = file_get_contents( $fileName )) ){<🎜> die('file read error!');<🎜> }<🎜> $string = strtolower($string);<🎜> $matched = preg_match('/'.$words.'/i', $string, $result);<🎜> if ( $matched && isset($result[0]) && strlen($result[0]) > 0 ) { if ( strlen($result[0]) == 2 ){ $matched = preg_match('/'.$words.'/iu', $string, $result); } if ( $matched && isset($result[0]) && strlen($result[0]) > 0 ) { Return true; }else{ Return false; }  }else{ return false; } } $content = 'Test keyword'; if ( banwordCheck($content, './banwords.txt') ){ echo "matched! "; }else{ echo "no match! "; } http://www.bkjia.com/PHPjc/629632.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/629632.htmlTechArticleWe often find that where we submit a reservation, there will be a lot of advertising, and later we want to make one I have searched for several methods to introduce the function of blocking and filtering specified keywords... Statement of this Website The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn Hot AI Tools Undresser.AI Undress AI-powered app for creating realistic nude photos AI Clothes Remover Online AI tool for removing clothes from photos. Undress AI Tool Undress images for free Clothoff.io AI clothes remover AI Hentai Generator Generate AI Hentai for free. Show More Hot Article R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal) 2 weeks ago By 尊渡假赌尊渡假赌尊渡假赌 Repo: How To Revive Teammates 4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌 Hello Kitty Island Adventure: How To Get Giant Seeds 4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌 How Long Does It Take To Beat Split Fiction? 3 weeks ago By DDD R.E.P.O. Save File Location: Where Is It & How to Protect It? 3 weeks ago By DDD Show More Hot Tools Notepad++7.3.1 Easy-to-use and free code editor SublimeText3 Chinese version Chinese version, very easy to use Zend Studio 13.0.1 Powerful PHP integrated development environment Dreamweaver CS6 Visual web development tools SublimeText3 Mac version God-level code editing software (SublimeText3) Show More Hot Topics Where is the login entrance for gmail email? 7338 9 Java Tutorial 1627 14 CakePHP Tutorial 1352 46 Laravel Tutorial 1265 25 PHP Tutorial 1210 29 Show More Related knowledge CakePHP Project Configuration Sep 10, 2024 pm 05:25 PM In this chapter, we will understand the Environment Variables, General Configuration, Database Configuration and Email Configuration in CakePHP. PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian Dec 24, 2024 pm 04:42 PM PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati CakePHP Date and Time Sep 10, 2024 pm 05:27 PM To work with date and time in cakephp4, we are going to make use of the available FrozenTime class. CakePHP File upload Sep 10, 2024 pm 05:27 PM To work on file upload we are going to use the form helper. Here, is an example for file upload. CakePHP Routing Sep 10, 2024 pm 05:25 PM In this chapter, we are going to learn the following topics related to routing ? Discuss CakePHP Sep 10, 2024 pm 05:28 PM CakePHP is an open-source framework for PHP. It is intended to make developing, deploying and maintaining applications much easier. CakePHP is based on a MVC-like architecture that is both powerful and easy to grasp. Models, Views, and Controllers gu How To Set Up Visual Studio Code (VS Code) for PHP Development Dec 20, 2024 am 11:31 AM Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c CakePHP Creating Validators Sep 10, 2024 pm 05:26 PM Validator can be created by adding the following two lines in the controller. See all articles Public welfare online PHP training，Help PHP learners grow quickly！ About us Disclaimer Sitemap © php.cn All rights reserved