Rayhan’s blog (raynux.com)

RayCrypt, A simple and easy PHP class for two way encryption and decryption with multiple configurations and plug and play features. Sometimes two way encryption is very much important when it comes in storing credential information. Credit Card, Bank account information, digital signature etc are very important information of user and strongly discouraged to store [...]

RayHttp, A Simple Http Client Class for PHP Development. This class is designed to provide quick http reqest method to access external website. A CURL alternative to php native file_get_contents method. It can work without any configuration and can be called anywhere is your application using singleton design pattern. Unlike other Http client class in [...]

Iptables is the default and powerful firewall that works on almost all Linux version including Ubuntu and Fedora. Here I have listed some important commands and a short description of each command for quick help. It can help people who already know little Iptables. manage chain: # iptables -N new_chain // create a chain # [...]

I have created a bash script file to install almost all necessary softwares to run and work on a Ubuntu box. I have tried this script in Ubuntu 8.04 Hardy Heron and Ubuntu 8.10 Intrepid Ibex. Softwares I have placed in this script covers PHP-MySQL development and desktop applications for graphics, multimedia, to Internet applications. [...]

A basic approach to upload and save image to a MySQL database and then display the image from the database. First you need to create a table in MySQL Database to store the image data. Log into you database and run the following sql command: CREATE TABLE  `images` ( `id` int(11) NOT NULL auto_increment, `name` [...]

Running linux with windows in dual boot mode is not hassle free at all. Specially if you reinstall or repair windows, your linux system will disappear. As a newbie you may stop using linux or reinstall it again instead of solving the problem. In this article I will share my experience on how to recover [...]

This is how I connect to internet from fedora box using my motorola L6 GPRS modem. I use this procedure with Teletalk connection. After a fresh fedora installation I enter the following command in the shell. This command creates a wvdial configuration file for my modem. # wvdialconf /etc/wvdial.conf Now I need to modify some [...]

Currently I am working on the documentation of my software written in PHP. From this documentation project I have found that proper commenting of code is a good documentation. If you write your code base along with comment then you don’t need to worry about the API Documentation of your software. You just have to [...]

Most of the time I forget what I did to solve a problem in the past. So I have decided to do some shorthand documentation. This post is on how did I import my project repository to the repository of my assembla account. First I took the backup of my repository in my windows pc [...]

Most of the time I forget what I did to solve a problem in the past. So I have decided to do some shorthand documentation. This is how I solve a very tricky problem when working with css in layout designing. I add the following css rules in my style file. .clearfix:after { content: “.”; [...]