php swear word detection function help?

hi,

I have made a flash message board. The chat room uses php to do the scripting back-end stuff

I have a built in swear word and detection function in my php that searches and removes swear words in comments.

The problem is if I have a word like “assignment” the php removes the ass part from the “assignment”. So instead of getting “assignment” I get “***ignment”. What I need is some form of swear word detection and remove function that only removes swear words but dose not remove swear words that are part of a word. So that it would remove the word ass if it was on its own but not if it was in the word assignment. My code for the php is as follows:

Sorry about all the long code but if I don’t past it all it wont make any sense also sorry about the swear words that’s for demonstration purposes. The swear word detection function is at the end of the code.

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<?php
      $SplitThis       = "________________________________________";
      $TopicsPerPage       = 11;
      $Submit       = $HTTP_POST_VARS[Submit];
      $Category       = $HTTP_POST_VARS[Category];
      $readDirGlobal       = $HTTP_POST_VARS[readDirGlobal];
      $readDir       = $HTTP_POST_VARS[readDir];
      $numLow       = $HTTP_POST_VARS[NumLow];
      $numHigh       = $HTTP_POST_VARS[NumHigh];
      $Category       = ereg_replace("[^A-Za-z1-9]", "", $Category);
      $Submit       = ereg_replace("[^A-Za-z]", "", $Submit);
      $readDir       = ereg_replace("[^A-Za-z]", "", $readDir);
      $readDirGlobal       = ereg_replace("[^A-Za-z]", "", $readDirGlobal);
if ($Submit == 'SubmitNew' OR $Submit == 'SubmitReply') {
      $Name             = $HTTP_POST_VARS[Name];
      $Subject       = $HTTP_POST_VARS[Subject];
      $Message       = $HTTP_POST_VARS[Message];
      $File             = $HTTP_POST_VARS[File];
      $Name             = ereg_replace("[^A-Za-z0-9 ]", "", $Name);
      $Subject       = ereg_replace("[^A-Za-z0-9 \.\-\:]", "", $Subject);
      $Message       = str_replace("-", "%2D", $Message);
      $Message       = ereg_replace("[^A-Za-z0-9 \@\.\/\%\'\[\]\:\\n\/\r ]", "", $Message);
      $Message       = str_replace("%2D", "-", $Message);
      $Name             = stripslashes($Name);
      $Subject       = stripslashes($Subject);
      $Message       = stripslashes($Message);
      $Checked       = "Yes";
      $Message = preg_replace("/([^\w\/])(www\.[a-z0-9\-]+\.[a-z0-9\-]+)/i", "$1http://$2", $Message);
      $Message = preg_replace("/([\w]+:\/\/[\w-?&;#~=\.\/\@]+[\w\/])/i", "<u><A TARGET=\"_blank\" HREF=\"$1\">$1</A></u>", $Message);
      $Message = preg_replace("/([\w-?&;#~=\.\/]+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,3}|[0-9]{1,3})(\]?))/i","<u><A HREF=\"mailto:$1\">$1</A></u>",$Message);
      $Message       = BadWordFunc($Message);
      $Name       = BadWordFunc($Name);
      $Subject       = BadWordFunc($Subject);
      $Message       = str_replace("[","<",$Message);
      $Message       = str_replace("]",">",$Message);
      $Message       = str_replace("{","'",$Message);
      $Message       = str_replace("}","'",$Message);
}
if ($readDir == "Yes") {
      readDirectory($Category, $numLow, $numHigh, $SplitThis, $TopicsPerPage);
}
if ($Submit == 'SubmitNew' AND $Checked == 'Yes') {
      submitNew($Category, $Name, $Subject, $Message, $numLow, $numHigh, $SplitThis, $TopicsPerPage);
}
if ($Submit == 'SubmitReply' AND $Checked == 'Yes') {
      submitReply($Category, $Name, $Subject, $Message, $File, $numLow, $numHigh, $SplitThis, $TopicsPerPage);
}
if ($readDirGlobal == "Yes") {
      $Results1       = CountGlobals("Category1", $SplitThis);
      $Results2       = CountGlobals("Category2", $SplitThis);
      $Results3       = CountGlobals("Category3", $SplitThis);
      $Results4       = CountGlobals("Category4", $SplitThis);
      $Results5       = CountGlobals("Category5", $SplitThis);
      $Results6       = CountGlobals("Category6", $SplitThis);
      $Results7       = CountGlobals("Category7", $SplitThis);      
      
      $GlobalPosts       = $Results1[0] + $Results2[0] + $Results3[0] + $Results4[0] + $Results5[0] + $Results6[0] + $Results7[0];
      $GlobalReplys       = $Results1[1] + $Results2[1] + $Results3[1] + $Results4[1] + $Results5[1] + $Results6[1] + $Results7[1];

      print "&GlobalTopics=$GlobalPosts&GlobalPosts=$GlobalReplys&";
}
function submitNew($Category, $Name, $Subject, $Message, $numLow, $numHigh, $SplitThis, $TopicsPerPage) {
 
      $TimePart       = time();
      $SubjectPart       = str_replace(" ", "-", $Subject);
      $NamePart       = str_replace(" ", "-", $Name);
      $filename       = $TimePart."_".$NamePart."_".$SubjectPart.".txt";
      $Today             = (date ("l dS of F Y ( h:i:s A )",time()));
      $Input             = "Thread=Subject: <b>$Subject</b><br>Name: <b>$Name</b><br>Message: $Message<br><i><font size=\"-1\">Date: $Today</font></i><br>$SplitThis";
      $pathToFile       = $Category."/".$filename;
      $fp = fopen( $pathToFile,"w");
      fwrite($fp, $Input, 4000);
      fclose( $fp );
      chmod ($pathToFile, 0666);
      print "&Status=Your message was sent&";
      readDirectory($Category, $numLow, $numHigh, $SplitThis, $TopicsPerPage);
      loadNewReply($pathToFile);
}
function submitReply($Category, $Name, $Subject, $Message, $File, $numLow, $numHigh, $SplitThis, $TopicsPerPage) {
      $PathName       = $Category."/".$File;
      $Today             = (date ("l dS of F Y ( h:i:s A )",time()));
      $newStuff       = "<br><br>Subject: <b>$Subject</b><br>Name: <b>$Name</b><br>Message: $Message<br><i><font size=\"-1\">Date: $Today</font></i><br>$SplitThis";
      $fp = fopen( $PathName,"a");
      fwrite($fp, $newStuff, 80000);
      fclose( $fp );
      print "&Status=Your reply has been sent&";
      readDirectory($Category, $numLow, $numHigh, $SplitThis, $TopicsPerPage);
      loadNewReply($PathName);
}
function readDirectory($Category, $numLow, $numHigh, $SplitThis, $TopicsPerPage) {
      $handle = opendir($Category);
            while (false !== ($topics = readdir($handle))) {  
                      if ($topics != "." && $topics != "..") {
                        $topicName = $Category."/".$topics;
                            $topicTime = filemtime($topicName);
                            $topicArray[$topics] = $topicTime;  
                  }
            }
      arsort($topicArray);
      $numberOfTopics = sizeOf($topicArray);
      print "&numTopicsAll=$numberOfTopics&";
if ($numberOfTopics <= $TopicsPerPage) {
      $Pages             = 1;
}
if ($numberOfTopics > $TopicsPerPage) {
      $Page             = ($numberOfTopics / $TopicsPerPage);
      $Pages             = floor($Page)+1;
}
$PageNumber             = $numHigh / $TopicsPerPage;
if ($numberOfTopics > $numHigh) {
      $numDup       = (($TopicsPerPage * $PageNumber));
      $numLDup       = ($numLow + 1);
}
if ($numberOfTopics <= $numHigh) {
      $numDup       = ($TopicsPerPage-($numHigh-$numberOfTopics));
      $numDup       = (($numDup + $numLow));
      $numLDup       = ($numLow + 1);
}
      $Count             = 1;
      foreach ($topicArray as $key => $value) {
                $thisTopicName       = $key;
                $thisTopicTime       = $value;
                $thisTopicTime       = date("n/j/Y", $thisTopicTime);
            $nameArray       = split ("_", $thisTopicName);
            $TopicSubject       = str_replace("-", " ", $nameArray[2]);
            $TopicName       = str_replace("-", " ", $nameArray[1]);
            $TopicSubject       = str_replace(".txt", "", $TopicSubject);
                $topicCreated       = date("n/j/Y", $nameArray[0]);
            $topicStartedBy = $TopicName;
            $fp = fopen( $Category."/".$thisTopicName,"r");
            $numReplysTopics = fread($fp, 80000);
            fclose( $fp );
            $numReplysTopicsArray       = split ($SplitThis, $numReplysTopics);
            $numReplysLocal       = count($numReplysTopicsArray) - 1;
            $numReplysGlobal       = $numReplysGlobal + $numReplysLocal;
            print "&Topic$Count=$TopicSubject&lastModified$Count=$thisTopicTime&File$Count=$thisTopicName&topicCreated$Count=$topicCreated&numReplys$Count=$numReplysLocal&topicStartedBy$Count=$topicStartedBy&";
      $Count = $Count + 1;
      }
      closedir ($handle);
      print "&TotalPosts=$numReplysGlobal&NumLow=$numLow&NumHigh=$numHigh&Pages=$Pages&numLow=$numLow&numLDup=$numLDup&numDup=$numDup&Go=Yes&";
}
function loadNewReply($PathName) {
            $fp             = fopen( $PathName,"r");
            $ForceIn       = fread($fp, 80000);
            fclose( $fp );
      print "&$ForceIn&";
}
function CountGlobals ($Category, $SplitThis) {
      $handle = opendir($Category);
      while (false !== ($topics = readdir($handle))) {  
                if ($topics != "." && $topics != "..") {
                      $topicArray[$topics] = $topicTime;  
            }
      }
      $numberOfTopics       = sizeOf($topicArray);
      for($t=0;$t<$numberOfTopics;$t++) {
                $thisFile             = each($topicArray);
                $thisTopicName             = $thisFile[0];
            $fp = fopen( $Category."/".$thisTopicName,"r");
            $numReplysTopics       = fread($fp, 80000);
            fclose( $fp );
            $numReplysTopicsArray       = split ($SplitThis, $numReplysTopics);
            $numReplysLocal       = count($numReplysTopicsArray) - 1;
            $numReplysGlobal       = $numReplysGlobal + $numReplysLocal;
      }
      closedir ($handle);
      $DataR                         = array($numberOfTopics, $numReplysGlobal);
      return $DataR;      
}
function BadWordFunc ($RemoveBadWordText) {
      $RemoveBadWordText = eregi_replace("fuc?k|[kc]unt|asshole|****|fag|wank|dick|pu[zs]?[zs][yi]|bastard|s[kc]rew|mole[zs]ter|mole[sz]t|coc?k|git|twat|gits|twats|twaz|****ers|****erz|gay|gaybo|gaybow|retard|retarded|lesbian|lezzy|lezbo|gays|****|****z|ass|god|jesus|dildo|retards|retardz|ass|pick|pike|bolloks|bollerks|bullocks|bollox|bullox|bullockz|gitz", "****", $RemoveBadWordText);
       return $RemoveBadWordText;
}
?>
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I have also tried this form of swear word detection on a guest book I made in flash:


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<?
    $Name = ereg_replace("[^A-Za-z0-9 ]", "", $Name);
    $Email = ereg_replace("[^A-Za-z0-9 \@\.\-\/\']", "", $Email);
      $Shout       = str_replace("-", "%2D", $Shout);
      $Shout       = ereg_replace("[^A-Za-z0-9 \@\.\/\%\'\[\]\:\\n\/\r ]", "", $Shout);
      $Shout       = str_replace("%2D", "-", $Shout);
      $Shout       = str_replace("{", "'", $Shout);
      $Shout       = str_replace("}", "'", $Shout);
      $Shout       = str_replace("[", "<", $Shout);
      $Shout       = str_replace("]", ">", $Shout);
    $Website = ereg_replace("[^A-Za-z0-9 \@\.\-\/\'\~\:]", "", $Website);
    $Name = stripslashes($Name);
    $Email = stripslashes($Email);
    $Website = stripslashes($Website);      
    $new = $date_array[0] + $time_a;
    $date = (date ("l dS of F Y ( h:i:s A )",time()));
    $date = (date ("l dS of F Y ( h:i:s A )",time()));
      $Submit = "Yes";
if ($Submit == "Yes") {
    $filename = "ShoutBox-R.txt";
    $fp = fopen( $filename,"r");
    $OldData = fread($fp, 80000);
    fclose( $fp );
                $array_1 = array("****","ass");
                $array_2 = array("****","***");
                for($x=0;$x<3;$x++)
                {
                $Shout = str_replace($array_1[$x],$array_2[$x],$Shout);
                }
                $Shout=$Shout;                  
    $Input = "</font><br>Name : $Name<br><font size=\"8\" color=\"#FFFF00\"><i>($date)</i></font> <br>Website : <u><a href=\"http://$Website\" target=\"new\">$Website</a></u><br>Email : <u><a href=\"mailto:$Email\">$Email</a></u><br></a>Shout : <font color=\"#FFFFFF\" size=\"11\">$Shout</font></b><br><br>___________________________________<i><br><font color=\"#021736\" size=\"1\">";
    $New = "Shouts=$Input$OldData";
      $filename = "ShoutBox-R.txt";
    $fp = fopen( $filename,"w+");
    fwrite($fp, $New, 80000);
    fclose( $fp );
}
  ?>
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To see the form and shout box the sites are:

http://www.rabidlemming.com/Forum/Forum.html
http://www.rabidlemming.com/shout/

Any help would be appreciated

Many thanks in advanced

Cheers