How to implement shielding keywords in PHP

This article mainly introduces the implementation method of blocking keywords in PHP, which has certain reference value. If you need it, you can learn more.

This article introduces the implementation method of PHP shielding keywords. There are two implementation methods, as follows:

The first method

The idea is to use regular expressions to match keywords, and replace the keywords with other characters

 $str = "/你大爷|你麻痹|什么玩意|SB|你他妈/";  // 关键字正则字符串  
 $string = "你他妈干什么玩意了 SB";    // 文本字符串 
 echo preg_replace($str, "*", $string);    //preg_replace() 执行一个正则表达式的匹配和替换

OK The method is over. It’s quite simple. Everyone When reading, you can think about it first according to your ideas

Method 2

Thinking

1. Put the keywords To a txt document, it must be separated by certain symbols. Use the file_get_contents() function to read the keyword document into

2. Use the function explode() to split the string into an array and loop the array strpos() to search. Matching keywords

Code

header('content-type:textml; charset=utf-8;'); 
function strPosFuck($content) 
{   
$fuck = file_get_contents('keyWords.txt');  // 读取关键字文本信息  
$content = trim($content);    $fuckArr = explode("\n",$fuck);  // 把关键字转换为数组  
for ($i=0; $i < count($fuckArr) ; $i++)   
{  
// $fuckArr[$i] = trim($fuckArr[$i]);  
if ($fuckArr[$i] == "") {     
continue;  //如果关键字为空就跳过本次循环   
# code...   
}    
if (strpos($content,trim($fuckArr[$i])) != false)    
  {    
  return $fuckArr[$i];  //如果匹配到关键字就返回关键字     
  # code...     
  }   
  }    return false;  // 如果没有匹配到关键字就返回 false 
  } 
  $content = "我今天你大爷碰到一个SB";  
  $key = strPosFuck($content); 
  if ($key) 
  {  
  echo "存在关键字".$key;  
  # code...  
  } 
  else  
  {   
  echo "OK"; 
  }

Notes Be sure to go empty Be sure to go empty,

strops() The return value of the function is either false or when judging the position of the keyword, please pay attention

After success, you can think about how to return all the matched keywords to form a string or Array

The above is the entire content of this article, I hope it will be helpful to everyone's study.

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