How to replace sensitive words in php

php method to replace sensitive words: 1. Create a php sample file; 2. Define a form comment form; 3. Use the "str_replace($word, "***", $pinglun);" method Just replace sensitive words in comments with asterisks.

The operating environment of this tutorial: Windows 7 system, PHP version 8.1, Dell G3 computer.

How to replace sensitive words in php?

The code is as follows:

     
  
 请输入您的评论：
 
  
   alert('您的评论存在敏感词，将会被替换');"; $str=str_replace($word, "***", $pinglun); exit(""); }else{ exit(""); } } ?>

Note: The str_replace() function replaces some characters in the string (case-sensitive).

This function must follow the following rules:

If the searched string is an array, then it will return an array. If the string being searched is an array, then it will find and replace each element in the array. If an array needs to be searched and replaced at the same time, and the elements to be replaced are less than the number of elements found, the excess elements will be replaced with empty strings. If you search an array and replace only one string, the replacement string will apply to all found values.

Note: This function is case-sensitive. Please use the str_ireplace() function to perform a case-insensitive search.

Note: This function is binary safe.

Grammar

str_replace(find,replace,string,count)

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