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undefined index help

sasori

By sasori
in PHP Coding Help

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sasori Advanced Member

sasori

Posted
Posted

here's the screen shot of the error

 

fnwu3s.jpg

 

I don't really know what's going on

 

here's the  chat.php code

 

<?php

require_once("chat.class.php");

$mode = $_POST['mode'];
$id = 0;

$chat = new Chat();

if($mode == 'SendAndRetrieveNew')
{
  $name = $_POST['name'];
  $message = $_POST['message'];
  $color = $_POST['color'];
  $id = $_POST['id'];
  if($name != '' && $message != '' && $color != '')
  {
    $chat->postMessage($name,$message,$color);
  }
}
elseif($mode == 'DeleteAndRetrieveNew')
{
  $chat->deleteMessages();
}
elseif($mode == 'RetrieveNew')
{
  $id = $_POST['id'];
}

if(ob_get_length()) ob_clean();
header('Expires: Mon, 26 July 1997 05:00:00 GMT');
header('Last-Modified: '. gmdate('D, d M Y H:i:s'). 'GMT');
header('Cache-Control: no-cache, must-revalidate');
header('Pragma: no-cache');
header('Content-Type: application/json');
echo json_encode($chat->retrieveNewMessages($id));
?>

 

and here's the chat.class.php

 

<?php

require_once('config.php');
require_once('error_handler.php');

class Chat
{
  private $mMysqli;

  function __construct()
  {
    $this->mMysqli = new mysqli(DB_HOST,DB_USER,DB_PASS,DB_DATABASE);
  }

  public function __destruct()
  {
    $this->mMysqli->close();
  }

  public function deleteMessages()
  {
    $query = 'TRUNCATE TABLE chat';
    $result = $this->mMysqli->query($query);
  }

  public function postMessage($name,$message,$color)
  {
    $name = $this->mMysqli->real_escape_string($name);
    $message = $this->mMysqli->real_escape_string($message);
    $color = $this->mMysqli->real_escape_string($color);
    $query = 'INSERT INTO chat(posted_on, user_name,message,color)';
    $query .= 'VALUES(NOW(),"$name","$message","$color")';
    $result = $this->mMysqli->query($query);
  }

  public function retrieveNewMessages($id=0)
  {
    $id = $this->$mMysqli->real_escape_string($id);
    if($id>0)
    {
      $query =
      'SELECT chat_id, user_name, message, color, DATE_FORMAT(posted_on, "%Y-%m-%d %H:%i:%s") AS posted on '.
      'FROM chat where chat_id > '. $id .
      'ORDER BY chat_id ASC';
    }
    else
    {
      $query =
      'SELECT chat_id, user_name, color, posted_on FROM'.
      '{SELECT chat_id, user_name, message, color, '.
      'DATE_FORMAT(posted_on,"%Y-%m-%d %H:%i:%s) AS posted_on'.
      'FROM chat '.
      'ORDER BY chat_id DESC'.
      'LIMIT 50) AS Last50'.
      'ORDER BY chat_id ASC';
    }

    $result = $this->mMysqli->query($query);
    $response = array();
    $response['clear'] = $this->isDatabaseCleared($id);
    $response['messages'] = array();

    if($result->num_rows)
    {
      while($row = $result->mysqli_fetch_array(MYSQLI_ASSOC))
      {
        $message = array();
        $message['id'] = $row['chat_id'];
        $message['color'] = $row['color'];
        $message['name'] = $row['user_name'];
        $message['time'] = $row['posted_on'];
        $message['message'] = $row['message'];
        array_push($response['messages'],$message);
      }
      $result->close();
    }
    return $response;
  }

  private function isDatabaseCleared($id)
  {
    if($id > 0)
    {
      $check_clear = 'SELECT count(*) old FROM chat where chat_id <= $id';
      $result = $this->mMysqli->query($check_clear);
      $row = $result->fetch_array(MYSQLI_ASSOC);
      if($row['old'] == 0)
        return 'true';
      return 'false';
    }
    return 'true';
  }
}

?>

 

and here's the html page

 

<html>
<head>
    <title>testing chat.php</title>
</head>
<body>
    <form action="chat.php" method="post">
        Mode:
        <input type="text" name="mode" size="50" value="SendAndRetrieveNew" />
        <br />
        Name:
        <input type="text" name="name" size="50" />
        <br />
        Message:
        <input type="text" name="message" size="50" />
        <br />
        Color:
        <input type="text" name="color" size="50" value="#000000"/>
        <br />
        ID:
        <input type="text" name="id" size="50" />
        <br />
        <input type="submit" />
    </form>
</body>
</html>

 

and here's my error_handler.php

 

<?php


set_error_handler('error_handler',E_ALL);

function error_handler($errNo,$errStr,$errFile,$errLine)
{
    if(ob_get_length()) ob_clean();
    $error_message = 'ERRNO: '. $errNo. chr(10).
                    'TEXT: '. $errStr. chr(10).
                    'LOCATION: '. $errFile. chr(10).
                    ', line '. $errLine;
    echo $error_message;
    exit;
}

?>

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sasori Advanced Member

sasori

Posted
  • Author
Posted

Is the filename actually chat.php without a typo maybe chat.phps or something.

Does it prompt the download in I.E?

 

What changes have you made in chat.php for it to lead to a possible download prompt.

 

yeah, i tried in I.E(8),, and it does the same thing too, i didn't alter anything in the chat.php file, only the chat.class.php

but no, am 101% sure all my files got .php extension except for the test.html ofcourse.

any idea now why chat.php is being downloaded when form is submitted ?

TeddyKiller Advanced Member

TeddyKiller

Posted
Posted

none sir, my webhosting account doesn't allow ajax chat..actually this code isn't fully complete yet, it's supposed to be an ajax stuff :)

Seriously?! Ajax is PHP + Javascript.. all paid hosts must allow that.. quite a few free hosts do too like 000webhosting.

How are you testing the code?

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