Hightlight or Censor Words in PHP

By Darren W. Hedlund
2005-06-20

Hightlight or Censor Words in PHP

This tutorial will show you how to load a flat file and parse text to highlight or even censor out a word.

First step is to create an empty folder and create two text files. The first one rename it to badwords.txt, and the second as index.php

Open the badwords.txt file and enter in:
dog
fleas

Next open the index.php file, and past the following information

<?php 
$message = "My dog has fleas....";
censor($message);
function censor($message)
 {  
 $fh = fopen("badwords.txt","r"); //Open the file that contains the words 
 while($word = fgets($fh,4096)) 
  { 
  $message = ereg_replace(trim($word),"<b>$word</b>",$message); //replace words 
     }
 return $message; //return censored words 
 }  
echo censor($message);
?>

Access the index.php through your localhost address, or web page, abd you should see the following:

My dog has fleas....

Tutorial Pages:
» Hightlight or Censor Words in PHP

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