<?php
/* ########################## INFO ##########################

                       Advanced shoutbox
                          Version 1.0

         Free script from WB - Webdesign for beginners.
          Visit http://plohni.com/wb for more scripts.
               Feel free to modify this script.
                              lgp

/* ########################## INFO ########################## */
/* ###################### INSTALLATION ###################### */

   // a) Adjust the configuration variables to your needs

         $file = "shouts.txt"; // Name of the file which
                               // contains the shouts
         $shouts = 4; // Number of shouts to be displayed
         $maxlength_name = "20"; // Maximum length of name
         $maxlength_text = "150"; // Maximum length of text
         $break_name = "15"; // Break name after characters
                             // without space
         $break_text = "15"; // Break text after characters
                             // without space

   // b) Copy this code to your PHP file
   // c) Copy your PHP file and the shouts file defined in
   //    variable $file to your server using ASCII mode
   // d) Make the shouts file writable (Windows: adjust
   //    security, Unix: chmod 777)

/* ###################### INSTALLATION ###################### */
/* ############# SCRIPT (EDIT AT YOUR OWN RISK) ############# */
?>
<p>
  <form action="<?php echo $_SERVER["PHP_SELF"]; ?>" method="post">
    <input type="text" value="Your name" name="input_name" maxlength="<?php echo $maxlength_name; ?>" onfocus="if(this.value=='Your name'){this.value='';}" onblur="if(this.value==''){this.value='Your name';}" /><br />
    <input type="text" value="Your text" name="input_text" maxlength="<?php echo $maxlength_text; ?>" onfocus="if(this.value=='Your text'){this.value='';}" onblur="if(this.value==''){this.value='Your text';}" /><br />
    <input type="submit" value="Shout!" />
  </form>
</p>
<hr />
<p>
<?php
  //function to break text after x characters
  function str_break($str,$maxlen){
    $nobr = 0;
    $len = strlen($str);

    for($i=0;$i<$len;$i++){
      if(($str[$i]!=' ') && ($str[$i]!='-') && ($str[$i]!="\n")){
        $nobr++;
      }else{
        $nobr = 0;

        if($maxlen+$i>$len){
          $str_br .= substr($str,$i);
          break;
        }
      }
      
      if($nobr>$maxlen){
        $str_br .= ' '.$str[$i];
        $nobr = 1;
      }else{
        $str_br .= $str[$i];
      }
    }
    
    return $str_br;
  }

  //number of shouts to be displayed
  $display = (isset($_GET["show"]) ? "all" : $shouts);

  //print links to either show all or specific number of shouts
  if($display == "all"){
    ?><a href="<?php echo $_SERVER["PHP_SELF"]; ?>">View small shoutbox</a><?php
  }else{
    ?><a href="<?php echo $_SERVER["PHP_SELF"]; ?>?show=all">View all shouts</a><?php
  }
?>
</p><p>
<?php
  //insert new shout
  $input_name = $_POST["input_name"];
  $input_text = $_POST["input_text"];
  
  //check if form has been submitted
  if(isset($input_name) && isset($input_text) && $input_name!="Your name" && $input_text!="Your text" && strlen($input_name)>0 && strlen($input_text)>0){
    //get last name and comment
    $handle = fopen($file,"r");

    while(!feof($handle)){
      $row = fgets($handle,999999);
      list($tmp_name,$tmp_text) = split("\|\|\|\|\|",$row);

      if($tmp_name != "" && $tmp_text != ""){
        $last_name = $tmp_name;
        $last_text = str_replace("\n","",$tmp_text);
      }
    }
    
    fclose($handle);

    $input_name = str_break($input_name,$break_name); //break name
    $input_name = str_replace("<","&lt;",$input_name); //prevent html input
    $input_name = str_replace(">","&gt;",$input_name); //prevent html input
    $input_name = stripslashes($input_name); //strip slashes
    
    $input_text = str_break($input_text,$break_text); //break text
    $input_text = str_replace("<","&lt;",$input_text); //prevent html input
    $input_text = str_replace(">","&gt;",$input_text); //prevent html input
    $input_text = stripslashes($input_text); //strip slashes

    if($last_name != $input_name || $last_text != $input_text){
      $handle = fopen($file,"a"); //open shouts file to write (append)
      fputs($handle,"$input_name|||||$input_text\n"); //insert name and shout
      fclose($handle); //close file handle
    }
  }

  //read shouts file
  $names = array(); //array to store names
  $shouts = array(); //array to store shouts
  $handle = fopen($file,"r"); //open shouts file to read
  
  while(!feof($handle)){ //read row by row
    $row = fgets($handle,999999);
    list($name,$shout) = split("\|\|\|\|\|",$row);
    
    if($name){
      array_push($names,$name);
      array_push($shouts,$shout);
    }
  }
  
  fclose($handle); //close file handle

  //reverse arrays so that new lines are first
  $names = array_reverse($names);
  $shouts = array_reverse($shouts);

  //number of shouts to really print
  $max = ($display == "all" ? count($names) : $display);

  //print shouts
  for($i=0;$i<$max && $i<count($names);$i++){
    ?><p><strong><?php echo $names[$i]; ?>:</strong>&nbsp;<?php echo $shouts[$i]; ?></p>
  <?php } ?>
</p>