Bu sohbet alanında gösterilir zaman, sadece emsallerine ilgili karakterleri değiştirir. örneğin < değiştirilir < ve benzerleri. Ama içeriği bu stilleri geçerli değildir

sohbet göndermek için benim jquery olduğunu

    function sendChat(message, nickname) {   
       $.ajax({
           type: "POST",
           url: "process.php",
           data: {  
                    'function': 'send',
                    'message': message,
                    'youtube': youtube,
                    'nickname': nickname,
                    'file': file
                    },
           dataType: "json",
           success: function(data){

           }
        });
       if(youtube==1)
           youtube=0;
}

dosyasında sohbet tasarrufu için benim php

$nickname = htmlentities(strip_tags($_POST['nickname']), ENT_QUOTES);
             $patterns = array("/:\)/", "/:D/", "/:p/", "/:P/", "/:\(/");
             $replacements = array("<img src='smiles/smile.gif'/>", "<img src='smiles/bigsmile.png'/>", "<img src='smiles/tongue.png'/>", "<img src='smiles/tongue.png'/>", "<img src='smiles/sad.png'/>");
             $reg_exUrl = "/(http|https|ftp|ftps)\:\/\/[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(\/\S*)?/";
             $blankexp = "/^\n/";
             if(isset($_POST['youtube']) && $_POST['youtube'] == 1)
             {
                $ytvIDlen = 11; // This is the length of YouTube's video IDs
                $idStarts = strpos($_POST['message'], "?v=");
                if($idStarts === FALSE)
                $idStarts = strpos($_POST['message'], "&v=");
                if($idStarts === FALSE)
                    die("YouTube video ID not found. Please double-check your URL.");
                $idStarts +=3;
                $ytvID = substr($_POST['message'], $idStarts, $ytvIDlen);
                //$message = '<object width="300" height="250" allowfullscreen="true" data="http://www.youtube.com/v/'.$ytvID.'" type="application/x-shockwave-flash"><param name="allowFullScreen" value="true"><param name="src" value="http://www.youtube.com/v/'.$ytvID.'" /></object>';
                $message = '<object width="425" height="355">
  <param name="movie" value="http://www.youtube.com/v/'.$ytvID.'?fs=1"></param>
  <param name="allowFullScreen" value="true"></param>
  <param name="allowScriptAccess" value="always"></param>
  <embed src="http://www.youtube.com/v/'.$ytvID.'?fs=1"
    type="application/x-shockwave-flash"
    allowscriptaccess="always"
    width="300" height="250" 
    allowfullscreen="true"></embed>
</object>';
             }
             else
             {
                $message = htmlentities(strip_tags($_POST['message'],'<font>'), ENT_QUOTES);

                if (!preg_match($blankexp, $message)) {

                     if (preg_match($reg_exUrl, $message, $url)) {
                     $message = preg_replace($reg_exUrl, '<a href="'.$url[0].'" target="_blank">'.$url[0].'</a>', $message);
                 } 
                 $message = preg_replace($patterns, $replacements, $message);
                }
             }
                 //fwrite(fopen($file, 'a'), "<span>". $nickname . "</span>" . $message = str_replace("\n", " ", $message) . "\n");
                 fwrite(fopen($file, 'a'),"<span>". $nickname . ": (".date('d M, Y h:i A').")</span>" . "~\t~" . $message = str_replace("\n", " ", $message) . "\n");  


             break;

güncelleme sohbet alanı için benim jquery olduğunu

function updateChat(){
    $.ajax({

        type: "GET",
        url: "update.php",
        data: { 
        'state': state,
        'file' : file,
        'nickname': usernameid
        },
        dataType: "json",
        cache: false,
        success: function(data) {
        alert(data.text);
            if (data.text != null) {
                for (var i = 0; i < data.text.length; i++) {  
                $('#chat-area').append($("<p>"+ data.text[i] +"</p>"));
            }

            document.getElementById('chat-area').scrollTop = document.getElementById('chat-area').scrollHeight;

        }  

        instanse = false;
        state = data.state;
        setTimeout('updateChat()', 1);

        }
    });
}

Sonunda dosyadan sohbet almak benim php

$nickname = htmlentities(strip_tags($_GET['nickname']), ENT_QUOTES);
    function getfile($f) {

        if (file_exists($f)) {
            $lines = file($f);
        }   

        return $lines; 

    }

    function getlines($fl){
          return count($fl);    
    }

    $state = htmlentities(strip_tags($_GET['state']), ENT_QUOTES);
    $file = htmlentities(strip_tags($_GET['file']), ENT_QUOTES);

    $finish = time() + 50;
    $count = getlines(getfile($file));

    while ($count <= $state) {

        $now = time();
        usleep(10000);

        if ($now <= $finish) {
            $count = getlines(getfile($file));
        } else {
            break;  
        }  

    }        

    if ($state == $count) {

    $log['state'] = $state;
    $log['t'] = "continue";

    } else {

    $text= array();
    $log['state'] = $state + getlines(getfile($file)) - $state;

    foreach (getfile($file) as $line_num => $line) {
    if ($line_num >= $state) {
    $line = explode("~\t~", $line);
    if(substr($line[1], 0, 1)!='@')
    $text[] = ''.$line[0].''.$line[1];
    elseif($line[0]==$nickname || substr($line[1], 0, strlen('@'.$nickname))=='@'.$nickname)
    $text[] = ''.$line[0].' '.$line[1].'';
    }

    $log['text'] = $text; 
    }
    }