RCaller 2.2.0 has just been released

We have just uploaded the new compiled jar file of latest Rcaller, the simple library for calling R from within Java.

We plan to clean recently reported bugs, but the most important one was having some errors about the R package Runiversal, which is required by the library for generating XML files. The basic issue underlying this problem was the package storing policy of R which depends on the user that installed the package.

In the most recent version 2.2, users do not need to pre-install the R package Runiversal. Simply add RCaller-2.2.0-SNAPSHOT.jar to your classpath and go!

The download link of the compiled library is here [Google Driver Link]

The library is tested in a pc with Ubuntu OS installed and the usual test scenarios are success in all cases. The library has not been tested on Windows machines. 

Please use the link of Google code page at http://code.google.com/p/rcaller/issues/list and enter your problems in issues part and do not hesitate to contribute our library. 

Sending Data to MySQL Database Using PHP With Unity3D Game Engine

Hello everyone, In this article, I will share an Unity3D game engine example with you guys. We will imagine that we have got a game has been played and opened score scene. This step will be sharing platform for scores between users. At this stage score information will be taken and posted to PHP page for sending to MySQL database. For these steps, we'll need these digital materials and tools given below:

• An empty scene in the Unity3D game engine and Main Camera
• An JavaScript scripting file for posting data to PHP page
• An table named highscore in the MySQL database
• An Server that can work PHP programming language

First, we will add javascript file to Main Camera Inspector in the empty scene.

function send(data, username) {
    var form = new WWWForm();
    form.AddField("action", "send");
    form.AddField("score", data);
        form.AddField("username", username);
    var url = "http://localhost/unity/send.php";
    var w = WWW(url, form);
    yield w;
}

send(999, "phpservisi");

Codes given above send score information to send.php PHP file for saving MySQL database. WWWForm object has been created for outside connection. This object has got action attribute and send value. This value will be used in PHP file as a condition to send MySQL database. score attribute's value is going to share with other players. For that reason we need all attribute, variable and values. Url variable shows us what will we use for target POST URL information.

Just remember that you have to add this JavaScript file to Main Camera's Inspector part using Add Component.

Now, we can finally create our PHP file for saving datas to MySQL DATABASE. But first create highscore table in the MySQL: 

Let's get PHP file:

mysql_connect("localhost","username","password");
mysql_select_db("database_name");
 
if($_REQUEST['action']=="send") {
$score = $_REQUEST['score'];
$username = $_REQUEST['username'];
$query = "INSERT INTO `highscore` (username, score) VALUES ('$username', '$score')";
mysql_query($query);

From on now, we can send our score data to PHP file for saving database, when the game run. send function helps us to POST datas. username and score datas are used via JavaScript file in the Unity3D game engine. $score and $username variables came from JavaScript file as you have known. After this we just use
SQL query.

As result, we have just done sent datas to MySQL database using PHP programming language with Unity3D game engine JavaScript codes. This article will be helpful. Because if you want to create a game for muliplatform, you have to develop multiplatform.

See you guys next articles!

How to Generate Search Engine Friendly URL - SEF LINK

Hi! I will talk about making web site optimized for search engines. SEF link stands for Search Engine Friendly words in English language. This concept makes structure of web sites better and user friendly. For example imagine that a database on your server. You want to show products from the table in the database. In general, we developers get data with field of the table and use it like id=1 URL structure. Because that is so simple. But this showing is not understandable and useful for search engines, Google, Yahoo, Yandex etc. That's the point we should get SEF links!

programming_language.php?id=1

The URL given above us POST global id variable and returns 1 value. Yes, this is functional. Because after this step, we'll just make that query given below for getting datas:

SELECT * FROM table_name WHERE id=1

But we all know that the uses of the above is suck for nowadays. For that reason, we need to get URL given below:

programming-language-php.html
php-programming-language

We have to create a .htaccess file on the server side for generating an URL for above, that goes:

Options +FollowSymLinks
RewriteEngine On
ReWriteRule (.*) programming_language.php?id=$1 [L, QSA]

.htaccess file runs programming_language.php page and gets id value as SEF structure in the (.*) statement. According to these conditions lets make a PHP file for using SEF!

$var = $_POST["id"]; //getting URL data with using POST global variable
echo $var;

When we run the PHP page as www.whateverstdioe.com/php, we can see php on the screen. Because of there is a similarity between www.whateverstdioe.com/php and www.whateverstdioe.com/id=php. See you next article!

Source Code Management Using Git

Hello everyone!

In this article, I want to talk about version control systems. Actually management source code using Git. We use Git on the projects in which multiple participants. Git is not the only way to use version control. There are others which are so popular; SVN, Mercurial and CVS.

In this article, we will continue using code.google.com server. You can also get started to create an account from there. In code.google.com server, there are SVN, Mercurial and Git options. So, before the processing clone your project to local machine, we define username and password to log in. Sure, you have to set Git software up first.

echo machine code.google.com >> ~/.netrc
echo login email@example.com >> ~/.netrc
echo password yourpassword >> ~/.netrc
chmod go= ~/.netrc

The code given above shows us what we code on your Git console screen. Password value is a unique key word given by code.google. Login value is also your google e-mail address. From on now, the time is adding our code.

touch test.inc
git add test.inc
git commit -m "test file has been added"
git remote add myproject https://code.google.com/p/yourprojectname
git push myproject master:master

After doing this, test.inc file has been added successfuly. Following the first push, inserting, deleting and updating will be made.

touch text.txt
git status
git rm test.inc
git status -s
git add test.txt
git commit -m "some files has been changed"
git push

The commands given above, we can see touching and text file easily. test.inc file has been removed and created text.txt file, and logged "some files has been changed" message. After all, we push all change

git pull

Take care!

Redirect Mobile Devices Using PHP

Hi everyone!

Today, I want to share this useful article with you. This article is going to be about redirecting mobile devices with PHP programming language. I am sure that you will need it.
If you have your own web site or something else, It means that you have members, users or followers on your site. Sure, we should remember that most of people uses mobile devices. Internet, social media, game or some applications etc, and we know that they visit your web site from their mobile devices. For that reason if we put this special feature on, we get more quality site of course.

As I said the title, I am doing this using PHP. So, let me show you:

//just define user's agents (iphone or android)
$iphoneDevice  =  strpos($_SERVER['HTTP_USER_AGENT'], "iPhone");
$androidDevice =  strpos($_SERVER['HTTP_USER_AGENT'], "Android");

if($iphoneDevice) {
    print "Your device is iphone!";
}

if($androidDevice) {
    print "Your device is android, you can download Fast Boy Game 
Application from Play Google
";
    print "
FAST BOY";
}

That's it. If the user use iphone, will see "Your device is iphone!" message on the screen, if use android device,

Your device is android, you can download Fast Boy Game 
Application from Play Google
FAST BOY (clickable)

If you want to put more features on your web site, for example blackberry, webos or ipod, you can use already.

$webOSDevice      = strpos($_SERVER['HTTP_USER_AGENT'], "webOS");
$BlackBerryDevice = strpos($_SERVER['HTTP_USER_AGENT'], "BlackBerry");
$ipodDevice       = strpos($_SERVER['HTTP_USER_AGENT'], "iPod");

The code given above shows us other devices and brands.
We will see you next article!