Bubble.ro - because there is always something new to learn about

How to create the histogram of an image using PHP

 
A histogram is: a graphical display of tabulated frequencies. In our case, color frequencies that appear in an image. In some image manipulation software this can be named also as Levels. ...
Posted by: on October 30, 2006 at 14:37. (23 comments)
 

How to convert an image to grayscale using PHP

 
Although converting an image (usually in true color) to grayscale can sound like a simple operation if you are used to image processing software, PHP doesn't have a function for this conversion by default. ...
Posted by: on October 30, 2006 at 07:51. (13 comments)
 

How to check if an image is grayscale in PHP

 
Images, even if they are big or small are usually full of colour. However, in certain situations you may want to check if an image is indeed grayscale or not. You can do this using PHP and its image manipulation functions. ...
Posted by: on October 28, 2006 at 12:15. (2 comments)
 

Interchanging 2 variables without the use of a third

 
There are several ways Iíve seen over the years of interchanging 2 variables. Iíll show you here how you can do it with bitwise operations. This method is most efficient when used in combination with assembler. In C++ it is looked at more like a curiosity than a real method by most. However if you would want to make your C++ code harder to read, then this can be helpful. ...
Posted by: on September 16, 2006 at 09:30. (6 comments)
 

Convert the AOL user session collection to a MySQL database

 
The initial distributed file was AOL-data.tgz (439MB). Inside it contains a simple readme file and 10 .gz archives, each containing a CSV collection. With a packed size of about 45MB each, when extracted they reveal the true treasure: a nice collection of actual user searches (each file at about 200MB). ...
Posted by: on August 10, 2006 at 20:53. (4 comments)
 

Creating a customized session handling system in PHP (part II)

 
In the first part of this article I've explained the basics of sessions and how they can be used. It is now time to see how we can implement these theories and create a functional session management system using a database. ...
Posted by: on August 4, 2006 at 11:54. (5 comments)
 

Creating a customized session handling system in PHP (part I)

 
They are used on most websites, yet very few people know they even exist. They use various technologies like "cookies", "SQL", but not many know they can create their very own session handling systems to handle their own need. I will try to explain the technology behind the sessions and very much how to get your own sessions up and running. ...
Posted by: on July 29, 2006 at 12:57. (2 comments)
 


Other Random Articles

» Backup your Firefox and Thunderbird settings

How many times did you lose your settings, bookmarks or even emails by reinstalling your operating system or simply reinstalled your Mozilla browser/email manager? Now you can no longer worry about losing anything! ...


Posted by: Indy on March 18, 2006 at 09:59. (1 comment)

» ADL Search for oDC

Learn how to make oDC search for files "on the fly" as you browse various people share. Search or even sort files you want to quickly find using this simple yet efficient feature. ...


Posted by: Indy on April 16, 2006 at 17:25. (0 comments)

» How can I turn off system beeps?

System beeps are those sounds you hear when an error message or an information/warning message appears. They can be very annoying especially if your speaker volume is set to a high level (If you listen to rock music for example). To turn them off you will have to modify the system registry. ...


Posted by: Nitro on March 5, 2006 at 14:30. (34 comments)

» Learn more about BIOS

If you've ever wondered about the process that takes place when you power on your computer or if you need more information about updating your BIOS, you can learn more by reading this article. ...


Posted by: Quarc on March 18, 2006 at 14:34. (1 comment)

» How do I create my own Yahoo ID?

Are your friends asking you for your Yahoo ID? Are you unsure about what the hell do they want from you? If so read this comprehensive step-by-step tutorial on how you can get your very own Yahoo ID and brag about it to your wife :D ...


Posted by: Nitro on February 25, 2006 at 14:13. (685 comments)

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Aetolia - The Midnight Age
How to create the histogram of an image using PHP
How to convert an image to grayscale using PHP
How to check if an image is grayscale in PHP
Interchanging 2 variables without the use of a third
Error launching browser window:no XBL binding for browser
Convert the AOL user session collection to a MySQL database
Introduction to Matlab
Creating a customized session handling system in PHP (part II)
Creating a customized session handling system in PHP (part I)
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