AD - Design Tutorial : How To Make a Minion with Adobe Firewors

https://www.youtube.com/watch?v=L24Su4Munxw

View more skill oriented articles - www.slatecube.com

Introduction

This is a simple script for chat, made with PHP and JavaScript, using OOP and AJAX.

Requirements

Php Chat Box

• PHP 5+
• Browser with JavaScript enabled (preferable with support for CSS3).

Php Chat Room Script

This Chat script does not require database, it works with text files saved on server, so, it is fast and uses verry few server's resources. The user can add smiles in chat, and can format the text with Bold, Italic, an Underline., you can test it online to this link: Script Chat Simple. The nickname, chat room, and the On / Off setting for beep sound are saved in cookies (for one day), so, to the next visit they will be read and used from cookie. The script has been tested successfully on Mozilla Firefox, Internet Explorer, Google Chrome and Opera. This script is free (does not provide support or personal modifications).

Installation

And move it into the HEAD section of the page where you included the script.

• After you have unzipped the archive script_chat_simple.zip, copy on your server the file 'chat.php', and the directories: chatfiles, chattxt, and chatex (with all their files, in the same directory where you have the file in which you want to include the chat). The test.php file is for test.
• Set read-write-execute permissions to the directory chattxt, CHMOD 0777 (or 0755). In this directory PHP will save the TXT files with the chat for each chatroom.
• In the PHP file in which you want to include this chat script, add the following code:
• To have a valid HTML page, take this line of code (for CSS properties) from the beginning of the file 'chat.php':
• This script can also be included in '.html' files, using <object> or <iframe> tag (but the server must run PHP). So, to add the chat script into a '.html' file (blog, forum), write /copy in that page one of the following codes:
  • Object tag:
  • Or IFrame:
  • 'dir/chat.php' is the path to the directory and file where you have the script. If it's in the same folder, write only 'chat.php'.

Admin settings

Then select the Chat Room you want to empty, and use the password set to CADMPASS.

In this case, you must add session_start(); to the beginning of your PHP file, as you can see in 'test.php' file.

In the directory 'chatex/' there are two additional WAV files: beep2.wav and beep3.wav. By default, the script uses beep1.wav. In case you want to change the audio sound that is played when a new text chat is added in chat room, change in 'chatfunctions.js' file (line 13) the value of the variable:

If you want more chat rooms, add $chatrooms[] variables, with this syntax:

• In the file setchat.php (in chatfiles/ directory) you can change the default settings.
• By default, the script saves and displays the last 30 rows of chat, you can change this number to the line of code:
• The script allows users to add links in chat (with attribute rel='nofallow'), but if you want to remove this feature, replace the number 1 with 0, to the line of code:
• To the following line of code you can set a password used when you want to empty chat rooms (replace 'adminpass' with the password you want):
• To empty chat rooms, access in your browser the file chatfiles/setchat.php with ?mod=admin in URL. For example:
• If your web site has a register /login script, and you want than only the logged users to can add texts in chat, set the value of CHATADD to 0. Then set $_SESSION['username'] with the session your script uses to keep logged users; to the following code, in 'setchat.php'.
• The script initially contains two chat rooms: English, and Nature, if you want only one chat room, delete the line of code that contains the variable $chatrooms[] followed by the name of the chatroom. To change the name of the chatroom, modify the value of those variables.

The script can create automatically the text files for each chat room, but PHP must have writable permissions (CHMOD 0777, or 0755) in the 'chattxt' directory. The script can be easily changed to be used in other languages, just translate the text in the file 'texts.php' (in 'chatfiles/' folder). If you want to modify the colors and design of the chat, edit CSS properties in 'chatstyle.css' (or 'chatstyle_mini.css', the mini-version), in 'chatfiles/' folder. The file 'chatstyle_mini.css' can be used for a smaller graphics version of this chat script (width 245 px). In this version, to save space, the area with online users is not displayed.

9,000 + downloads! Thanks guys.

Introduction

Chat programs are common on the web these days. Now developers have a wider range of options when building chat programs. This article gets you a PHP-AJAX based chat application and it does not require page reloading for sending and receiving messages.

Core Logic

Before defining the core functions in the application, have a look at the basic appearance of the chat application, depicted in the following screenshot:

The chat text can be given in the input box provided at the bottom of the chat window. While clicking the Send button, it starts executing function set_chat_msg. It is an Ajax based function so that without refreshing the page, it can send the chat text to the server. In the server, it executes chat_send_ajax.php along with the username and chat text.

The PHP module receives the form data as Query String and updates to the database table named chat. The chat database table has the column names ID, USERNAME, CHATDATE and MSG. The ID field is an auto-increment field so that values to this ID field will be incremented automatically. Current date with time is updated in the CHATDATE Kknd krossfire free download. column.

To receive the chat messages of all users from the database table, a timer function is set for 5 seconds using the following JavaScript command. This will execute get_chat_msg function in 5 seconds interval.

The get_chat_msg is an Ajax based function. It executes chat_recv_ajax.php program to get chat messages from the database table. In the onreadystatechange property, another JavaScript function get_chat_msg_result is connected. While getting back the chat messages from database table, the program control goes to the get_chat_msg_result function.

In the chat_recv_ajax.php program, chat messages from users will be collected using the SQL select command. To limit the number of rows in the result, a limit clause is given in the SQL query (limit 200). This will request the last 200 rows from the chat database table. The messages obtained are sent back to the Ajax function for displaying the content in the chat window.

While the data is ready, the JavaScript function will collect the data received from the PHP. This data will be arranged inside a DIV tag. The oxmlHttp.responseText will hold the chat messages received from the PHP program and this will be copied to document.getElementById('DIV_CHAT').innerHTML property of the DIV tag.

The following SQL CREATE TABLE command can be used to create the database table named chat. All the messages that are typed by the users are going into the database table.

Points of Interest

It is an interesting piece of code for implementing chat application. It can be modified to develop a full fledged HTTP chat application. Simple programming logic is used in creating this application. Beginners will not face any difficulty to understand this code.