<?php
 
  $date = date( "l, F j Y, h:i a");  
 
if ($homepage == "" || $email == "" || $name == "" || $comments == "") {  //error checking
    header("Location: guestbook.html");
    exit;
} 
$message .="Name: $name \n";
$message .="Email: <a href=\"mailto:$email\">$email</a> \n";
$message .="Homepage: <a href=\"$homepage\">$homepage</a> \n";
$message .="Comments:  $comments \n"; 
$message .="Date:  $date \n"; 
$message .="----------------------------- \n";
 
if ($message){
// first read the file into a buffer, if it exists
// open in read mode only
if ($fp = @fopen ("guestbook.data", "r")){ 
  $oldmessages = @fread($fp,filesize("guestbook.data"));
  @fclose(fp);
   }
    // now reopen the file in write mode, with the 
    // pointer at the head of the file
    $fp = fopen ("guestbook.data", "w");
    fwrite ($fp, $message);
    fwrite ($fp, $oldmessages); // adding back the old messages
    fclose ($fp);
}
 
if (file_exists("guestbook.data")){
Header("Location: viewguestbook.html");
}
 
?>