You need facebook application ID and facebook application URL to add application on your page.

1. Make sure your are login into facebook.
   
   
2. Prepare “Add Page Tab” dialog url below. Replace YOUR_APP_ID with application id and YOUR_URL with application profile url. Application profile url look like this. https://apps.facebook.com/digitaltipstalk/
   
   
   Dialog URL: https://www.facebook.com/dialog/pagetab?app_id=YOUR_APP_ID&next=YOUR_URL
   
   
3. Copy url in browser address bar and go. Facebook new add to page tab dialog will prompt to add application to fan page.
   
   
4. Select fan page from the page list then click on “Add Page Tab” button to complete the process.
   
   
5. All done.

LAN networks are commonly characterized in terms of topology. Two major classes of LAN topologies are unconstrained and constrained topology. Three basic constrained LAN topologies known as Bus, Ring and Star topologies. Specific topologies depends on the geographical scope of network. Network limited to a company’s or universities local facilities. LAN networks has horizontal topologies and interconnect computers that are peers with similar capabilities.

Network that covers long distances are called WAN and often has vertical topologies. because some hosts may have greater data processing capabilities and less capable hosts funnel data to them for processing. In practice, a particular application may be pure topology or a mix of several topologies.

Horizontal OR Constrained Topologies

Star Topologies

Star topologies is the simplest topology. In this topology, there is  central switching node which is connected to nodes through multiple communication line. Nodes are not link directly to each other and can communicate only via the central switching node. The routing function performed by the central node which centrally controls communication between any two nodes by establishing a logical path between them. The central node can be active device or passive device and transmission medium can be either twisted pair wire, coaxial cable or optical fiber.

Advantages

• Transmission delays between two nodes do not increase by adding new nodes to the network because any two nodes may be connected via two links only.
• If any of the local computer or node fail; the remaining portion of the network does not affect.
• Data security is very high.

Disadvantages

• The system totally depends on the central node. If the central node fails entire network fails.
• Communication line cost is very high.

Ring Topology

In a ring topology, consecutive nodes are connected by point to point links which are arranged to form a single closed path called ring. Each ring processor has communicating subordinates but within the ring there is no master computer for controlling other computers.

A node receives data from one of its two adjacent nodes. The only decision a node has to take is weather the data is for its user or not. Data packet is utilized if addressed to the node otherwise passed it to nearby next node. The data flow may be uni-directional or bi-directional.

Ring Point-to-Point Topology – In point-to-point ring topology there is a broken copper wire and transmission is only through from one node to another node. However in any case, If  any one of the node get fails then ring topology automatically converts to bus topology.

Ring Broadcast Topology – In this type of topology transmission done at once at all the nodes rather than from one node to another node.

Advantages

• The ring network works well where there is no central-site computer system. It is truly distributed data processing system.
• It is more reliable than a star network because communication is not dependent on a single host computer. If one line between any two node break down or if one of the node itself break down alternate routing is possible.
• In this topology there is need to send acknowledgement separately. The frame itself work as a acknowledge frame because after passing through each and every node it returns back to the sender.

Disadvantages

• In a ring network, communication delay is directly proportional to number of the nodes in the network. Hence addition of the nodes in the network increases the communication delays.
• The ring network is not as popular as start network because of its more complicated control software.

Bus OR Linear Topology

In a bus topology all the network nodes are connected to a common transmission medium. As a result, one pair of users on the network can communicate at the same time. When a particular node wants to send a message to another nodes, it appends the destination address to the message and check weather the communication line is free. As soon as communication line is free it broadcasts or places the message on the line. As the message travels on the line each computer check weather it is address to it. The message is picked by the addressee computer which sends the acknowledgment to source computer and free the line.

Advantages

• The main advantage is that the cable runs are shorter then the other topology.
• The reliability of network is high because the failure of a computer in network does not affect the network functioning for other computers.
• Addition of new node to this topology is ea

Disadvantages

• Limitation of bus network include transmission distance restriction in base-band buses, difficulty in implementing delivery priorities and the signal balancing problem in baseband and dual cable broadband buses.

If you are having many 404 error page on your website then you may want to redirect all of them to your Word Press home page.  It will remove all 404 links from search engine index and transfer all benefits those links have to home page. So, it’s a good idea to get SEO benefit from not exist pages. If you are having lots of 404 error pages showing in google webmaster tool then this is the most recommended thing you can do quickly to resolve the issue.

WordPress theme support 404 template which is automatically called when 404 error occurs.  All you need to create 404.php file with following content and then upload to current active theme directory. If you already have 404.php in theme folder then overwrite old file with new file or add following content on top of existing file.

<?php
header("HTTP/1.1 301 Moved Permanently");
header("Location: ".get_bloginfo('url'));
exit();
?>

All you have done. Test it with a dummy 4o4 url to make sure code is working.

You must seen a little text strip in the bottom of the movie screen following dialog’s narrated by cast. Those are called subtitles. In other words, subtitles are basically text representation of dialog in a movie or program. Subtitles can be in same language or different language that helps peoples to understand spoken dialog’s. This really helps people who are unable to recognize accent in a spoken language.

Watching movies with subtitles on pc fairly easy. All you need a player that support Subtitles. Subtitles files usually contain .srt extension and basically a text file that can be open in any text editor. The VLC Media Player is most recommended player which support subtitles but many others also available that you can use for same purpose. Some of them i tried are: Media Player Classic, BS PLayer, KM Player, M Player.

Now you have player that support subtitles. Now look inside movie file directory for subtitles (.srt) file. If not there are plenty of website offering subtitles in number of languages. Try any of the below website, download subtitles (.srt) file and save file into same location where movie file reside.

http://www.opensubtitles.org
http://www.moviesubtitles.org
http://www.moviesubtitles.net
http://www.free-subtitles.org

Note: Make sure subtitles file has same file name as movie file name. See above picture for an example. VLC Media Player look for subtitles file with the same name in the same directory. If subtitles file have different name then rename it to to movie file name. Do not change extension.

Enjoy!!!

Well, You can easily disable generic error page and enable detailed error using web.config file. Web.config is XML file contain settings and configuration data for your asp or ASP.Net web application. This file used globally so you can use it for setting up global variables like database connection string.

Configuration is little bit different for IIS6 and IIS7. Here is settings for both III6 and IIS7.

IIS6 Web.Config Setting

If you have web.config file already in root folder simply open it in text editor and add below two lines inside tag. If not present then wrap below two line within opening and closing section. Complete file should be look like below. If web.config file not present then simply copy below text in a text file. Rename it as web.config file and upload file on web server root folder.

IIS7 Web.Config Setting

Look at below text it has one additional section . Create a web.config file with below content and upload it on root folder as above. If web.config already exist adjust content accordingly.

All done.

While working with an Iphone Application i wanted to display an image using UIImageView control i have designed using Interface Builder. The working environment is Mac 10.6, Xcode 4 and IOs SDK 4. Required images added to Resources folder in project. The code line is as below.

[imageView1 setImage:[UIImage imageNamed:@”130_001.jpg”]];

When i build and run application compiler break at this point and throw an error : Method ‘+imageNamed:’ not found (return type defaults to ‘id’)

I tried searching everywhere including IOS SDK documentation but could not find anything related to this issue. Finally, i tried to assign image to UIImageView in two steps. First is creating UIImage object using imageNamed method and then assign that image object to ImageView using setImage method. imageView object already added to Interface Builder. I did this in two steps below:

UIImage *image = [UIImage imageNamed: @"130_001.jpg"];
[imageView1 setImage:image];

As you see there is not much difference in both code. Somehow image object could not assigned directly using setImage method. If you have any idea please share your information using comments box.

How to Use

• Open required theme files using ftp(recommended) or theme editor in which you want to sort posts list by modified date. For example: index.php for home page posts listing, category.php for category posts listing and archive.php for archive page listing. Do the same for any other customized post listing pages.
• Add query_posts function just above loop with orderby=modified parameter. If query_posts parameter is already there just append orderby=modified parameter at the end of parameter list. see example below.

  global $query_string;
  $posts=query_posts($query_string . '&orderby=modified');
  if (have_posts()) : while (have_posts()) : the_post();

• This code will not work for next pages 2,3,4… because we are not passing page number here. You don’t need to pass page number if you are only showing limited posts in sidebar or some other special area. To fix this issue for normal posts listing simply grab page number value and pass it to function. Check code below.

  global $query_string;
  $paged = (get_query_var('paged')) ? get_query_var('paged') : 1;
  query_posts($query_string . '&orderby=modified&paged='.$paged);
  

• You may also use order=ASC or order=DESC to sort posts in ascending or descending order.
• orderby accept following values if you want to order by some other fields. values are: id, author, title, date, parent, rand, comment_count, menu_order, meta_value, meta_value_num

Other Customization

You can customize according to your need with several other parameter available. This section will list down some of useful parameters.

• posts_per_page – accept integer to show number of posts per page.
• tag – accept tag name as string to show posts lists from certain tag.
• order – accept ASC or DESC parameter to sort posts in ascending or descending order.
• cat – accept integer with minus or without minus sign. without minus sign represent plus which mean include posts from specified categories and minus sign means exclude posts from specified categories. You may use multiple categories with comma.
• category_name – Useful if you want to use category name instead of category number.
• year – accept numeric 4 digit year.
• monthnum – accept numeric month number. You may use year parameter along-with monthnum to show posts from certain month in a year.
• category__and – accept more then one category number in array and include posts that associated with all specified categories.
• category__in – accept more then one category number in array and include posts from either categories. This does not include posts from subcategories.
• category__not_in – accept more then one category number in array and exclude from either categories.
• post_type – accept post type like page, post, attachment or custom taxonomy.
• post__in – accept more then one post number in array and include only those posts.
• author – accept numeric integer parameter. Use multiple author ids with comma to include posts from multiple authors. minus sign can be used to exclude certain author posts.
• author_name – accept string parameter as author name.
• post_status – retrieves posts by post status. possible values are publish,pending,draft,auto-draft,future,private,inherit,trash. default value is publish.

Fatal error: Uncaught exception ‘Swift_RfcComplianceException’ with message ‘Address in mailbox given [] does not comply with RFC 2822, 3.6.2.’ in

The exception itself says there is something wrong in email address fields such as From, Sender or Reply-To fields. Swift Mailer strictly follow RFC standard to avoid emails being caught by spam checker tools. There are following reason can lead to this error.

• Incorrect email address format in to,from or reply-to fields
• Email address or host does not exist
• From email address should be valid working email address
• Not fully qualified domain name used in from email address

To fix this error check above settings in you script and fix accordingly. You may need to check RFC standard to fix this error. If still does not fix error you can disable email address RFC standard checking code in swift mailer script. Obviously this is not recommended but some time developer need to apply fix temporarily.

Before applying please check Swift Mailer documentation on how to set To,From,Cc, Bcc, Reply To fields correctly in Swift Mailer.

How To Disable RFC Standard Check

Go to swiftmailer\classes\Swift\Mime\Headers folder and open MailboxHeader.php file in editor. Go to line number 304 and comment throw exception line as specified below.

For Symfony users: swift mailer library can be found in vendor folder.

private function _assertValidAddress($address)
{
  if (!preg_match('/^' . $this->getGrammar('addr-spec') . '$/D',
    $address))
  {
    //throw new Swift_RfcComplianceException(
    //  'Address in mailbox given [' . $address .
    //  '] does not comply with RFC 2822, 3.6.2.'
    //  );
  }
}

The error should be disappear now.

Your email address will match your public username, for example:

Profile: facebook.com/username
Email: username@facebook.com

If you don’t have a username yet, you can choose one when you create your email address.

Once you set up your email address, people can email you using any traditional email system (e.g., Hotmail, Yahoo or Gmail), and the emails will be delivered to your Facebook Messages. When you send messages to external email addresses, the emails will be formatted to look like Facebook messages, including your name, your profile picture and your message.

1. Login to your hosting control panel and access PhpMyAdmin web interface. If your are using cpanel it is pretty easy.
2. Backpup your database first before doing anything.
3. Open SQL Query windows and run below command. It will show all orphan comments meta data. Replace table name prefix (wp_) in query with your actual table name prefix you used during installation. You can also check table prefix in phpmyadmin.

   Select * FROM wp_commentmeta WHERE comment_id NOT IN (SELECT comment_id FROM wp_comments)

4. Verify records shown in above query results. If you are sure run below command in SQL Query window. Replace table prefix with actual table prefix.

   DELETE FROM wp_commentmeta WHERE comment_id NOT IN (SELECT comment_id FROM wp_comments)

5. All Done.