Hi. I have a shout box on my index.
php
, it's integrated with my phpbb3 forum (it only displays to users logged in on the forum) one problem I have is trying to edit the shout box code to it auto fills the user name field with their forum name.

PHP Code:
<?php
    /******************************************************
     Shoutbox 1.0
     Written by Erik Holman at 24 May 2004
     ===================================
     Shoutbox somewhere in your page without frames but
     the shoutbox is able to scroll...

     Please do not remove the My-PHP links and headers...

     Visit www.my-php.tk for more free PHP scripts.
    ******************************************************/

    /////////////////////////////////////////////
    //Declare some variables
    //
    //Text file database
    $text_file     = "db.txt";
  
    //Fill in the URL to the shoutbox.php from the root
    $shoutbox_url  = "http://www.fifaleague09.com/shoutbox.php";
      
      //Where should the script go to after adding shout
    $referer_url   = "http://www.fifaleague09.com/index.php";
    //
    /////////////////////////////////////////////    

    /////////////////////////////////////////////
    //Add the shout to the database
    //
    if( isset($_GET['action']) && $_GET['action'] == "add" )
    {
        if( $_POST['email'] == "Email address" )
            $_POST['email'] = "";
        $new_line = $_POST['name']."|".$_POST['email']."|".date("Y/m/d H:i")."|".stripslashes(htmlspecialchars($_POST['message'])) . "\n";
        if( ! $fp = fopen($text_file,"a") )
            echo "Cannot open " . $text_file . "! Check the file rights."; 
        if( flock( $fp, LOCK_EX ) )
        {
            fwrite( $fp,$new_line );
            flock( $fp, LOCK_UN );
        } else {
            echo "Couldn't lock the file " . $text_file . "!";
        }
        header("Location: " . $referer_url );
    }
    //
    /////////////////////////////////////////////
    
    
    /////////////////////////////////////////////
    //Function show_shoutbox.
    //This function will print the complete shout
    //box.
    //
    function show_shoutbox($height = 350,$width = 120,$per_page = 8, $border="border:0px #DDDDDD solid;", $font_family="verdana",$font_size=10 )
    {
        //When there is requested a certain page
        if( isset( $_GET['shoutbox_page'] ) )
            $shoutbox_page = $_GET['shoutbox_page'];
            
        //If there is no page then the default page is 1
        if( empty( $_GET['shoutbox_page'] ) )
            $shoutbox_page = 1;

        //The database (a little shorter)
        $file = $GLOBALS['text_file'];
        
        //Open the file and return error when fail
        if( ! $fp = @fopen( $file, "r" ) )
        {
            echo "Cannot open database file for the shoutbox!";
            exit; 
        }
        
        //Init the output_buffer (string) and the shouts (array)
        $output_buffer = "";
        $shouts = array();
        
        //When the filesize is greater then null (file contains info)
        if( filesize($file) )
        {
            //Read the file
            $fp            = fread( $fp, filesize( $file ) );
            //all the shouts per line
            $shouts        = explode("\n",$fp);
            //total of shouts
            $total_shouts  = count($shouts);
            //total number of pages
            $total_pages   = ceil($total_shouts/$per_page);
            //set the shout_pointer from where the shouts must be shown
            $shout_pointer = (($total_shouts  - ($shoutbox_page * $per_page))+$per_page)-1;

            //when the requested page is greater then the total_pages, set the page to 1
            if( $shoutbox_page > $total_pages )
                $shoutbox_page = 1;

            //create the page_numbers (the select box)
            $output_buffer .= page_numbers( $total_pages , $shoutbox_page );
        }
        //Else use the default values... (empty shoutbox)
        else
        {
            $shouts         = 0;
            $total_shouts   = 0;
            $shout_pointer  = 0;
            $output_buffer .= page_numbers( 1 , 1 );
        }

        //Loop through the shouts. descending (Z to A)
        for( $i = $shout_pointer ; $i > ($shout_pointer-$per_page); $i-- )
        {
            //if the value is greater then -1
            if( $i > -1 )
            {
                //if the shouts exists
                if( $shouts[$i] )
                    list( $name, $email, $date, $shout ) = explode("|",$shouts[$i]);
                    
                //if the name is not empty
                if( !empty( $name ) )
                {
                    //empty the email_start and end
                    $email_start = "";
                    $email_end   = "";
                    //if the email is not empty
                    if( ! empty( $email ) )
                    {
                        $email_start = "<a href=\"mailto:" . $email . "\">";
                        $email_end   = "</a>";
                    }
                    //add to output buffer
                    $output_buffer  .= "<strong>" . $email_start . $name . $email_end . "</strong>\n<br />" . $shout . "<br /><br />";
                }
            }
        }
        ?>
            <table style="width:<?=$width;?>;">
                <form method="post" action="<?=$GLOBALS['shoutbox_url'];?>?action=add">
                <tr><td align="center" style="font-family:<?=$font_family;?>; font-size:<?=$font_size;?>px;"><strong>Shoutbox</strong></td></tr>
                <tr>
                    <td>
                        <div style="<?=$border;?> font-family:<?=$font_family;?>; font-size:<?=$font_size;?>px; height:<?=$height;?>; overflow:auto; padding:3px; width:100%;">
                            <?=$output_buffer;?>
                        </div>
                    </td>
                </tr>
                
                           
                <tr>
                    <td>
                        <div id="form">
                        <input type="text" name="name" value="Name" class="input" style="<?=$border;?> font-family:<?=$font_family;?>; font-size:<?=$font_size;?>px; width:100%;" onfocus="this.select();">
                        <input type="text" name="message" value="Message" class="input" style="<?=$border;?> font-family:<?=$font_family;?>; font-size:<?=$font_size;?>px;    width:100%;" onfocus="this.select();"><br />
                        </div>
                    </td>
                </tr>
                <tr>
                    <td align="center">
                        <input type="submit" value="Submit" class="submit" style="<?=$border;?> font-family:<?=$font_family;?>; font-size:<?=$font_size;?>px;"><br /></td>
                </tr>           
               </form> 
            </table>
        <?php
    }
    //
    /////////////////////////////////////////////
    /////////////////////////////////////////////
    //Function page_numbers
    //This function will create the select box
    //with page numbers to change the page
    //
    function page_numbers($total_pages,$current = 1)
    {
        //Get the URL from the address bar
        $url_bar = $_SERVER['PHP_SELF']. "?" . $_SERVER['QUERY_STRING'];
        
        //Remove the shoutbox_page=XX from the URL bar
        $url_bar = preg_replace( "/(&shoutbox_page=[1-9]+)/","", $url_bar );
        
        //Create a buffer to output this later.
        $buffer  = "<div align=\"center\">Page: <select onchange=\"javascript: location.href='" . $url_bar . "&amp;shoutbox_page='+this.value;\" style=\"font-family: verdana; font-size: 10px;\">\n";
        
        //Loop through the number of pages.
        for( $i = 1 ; $i <=    $total_pages ; $i++ )
        {
            //None selected
            $selected = "";
            //If the current page is $i, select this option
            if( $current == $i )
                $selected = "selected=\"selected\"";
            //Add output to the buffer
            $buffer .= "<option value=\"".$i."\"" . $selected . ">".$i."</option>\n";
        }
        //Close the output buffer
        $buffer .= "</select></div><hr size=\"1\">\n";
        
        //Return the buffer
        return $buffer;
    }
    //
    /////////////////////////////////////////////
    
    show_shoutbox();
?>

Not sure if this is any help? this is calling the username from the forum i think.
PHP Code:
<?php echo(''.$user->data['username'].'!'); ?>