FIVE Best programming languages that are in demand

Java

Java is one of the widely accepted object oriented programming language. It was designed by  James Gosling and Sun Microsystem in year 1995.

One of the main advantages of java is that once you write any program you can run it anywhere. Reason being java is platform independent and it runs on JVM (java virtual machine). On compiling, program gets converted into byte code. That byte code runs on java virtual machine. So, a program which is written on Linux can be executed on windows as well.

Step By Step Java tutorials   Java Tutorial

You can start learning java from kb4dev tutorials. This website presents comprehensive java notes to get started for beginners as well as for intermediates java professionals. You can also learn J2EE technologies without any cost.

The idea behind kb4dev is that each user can edit the notes provided at the website. So that tutorials will remain updated and authentic forever.

 

PHP

PHP stands for hypertext preprocessor which is a scripting language and used to develop web applications. PHP was developed in 1995 by Rasmus Lerdorf.Php tutorial

PHP can be deployed on almost every server and it is highly portable. You can mix the PHP code with simple HTML. Currently PHP supports object oriented features and it is very server side language to learn. PHP source code gets executed by PHP engines.

PHP has a strong community over web and new developers can get their queries solved by posting on forums.

Step By Step PHP tutorials

You can start learning PHP from kb4dev tutorials. This website presents comprehensive PHP notes to get started for beginners as well as for intermediates PHP professionals. Write from the basics of PHP advance concepts like cookies, sessions, CURL are covered in detail.

The idea behind kb4dev is that each user can edit the PHP notes provided at the website. So that tutorials will remain updated and authentic forever.

 

C

C programming is the best language for beginners to learn. It was developed by Dennis Ritchie in 1972. C is a procedural language and its code can be compiled on various platforms by doing some modifications. Before learning languages like C++ and Java, it is advised to learn C as it provides a strong foundation to other programming languages.

Step By Step C tutorials

You can start learning C from kb4dev tutorials. This website presents comprehensive C notes to get started for beginners. The idea behind kb4dev is that each user can edit C notes provided at the website. So that C programming tutorials will remain updated and authentic.

 

C#

C# was developed for c and c++ programmers to take advantage of Microsoft framework. Being object oriented language it also attracted JAVA developers to shift to DOT NET framework. It was released in year 2000 by Microsoft.

It is pronounced as C-sharp and it is general purpose language to develop software for windows and Microsoft platform.

Step By Step C# tutorials

You can start learning C# from kb4dev tutorials. This website provides comprehensive C# notes. The idea behind kb4dev is that each user can edit C# notes provided at the website. So that C# programming tutorials will remain updated and authentic.

 

SQL

SQL stands for structure query language. It is a general purpose language which is used to fetch data from relational database. SQL was released in 1974 and its syntax is similar to English language.

Step By Step SQL tutorials

You can start learning SQL from kb4dev tutorials. This website provides comprehensive SQL notes. The idea behind kb4dev is that each user can edit SQL notes provided at the website. So that SQL tutorials will remain updated and authentic.

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Atan2 () PHP Function

Definition: We can use the Atan () function to figure out the arc tangent of a number. We can also use the Atan2 () function to figure out the arc tangent of a point given two coordinates. It is written as atan(Y,X) and calculates the arc tangent of Y/X. The result will always be between -PI and PI radians.
Also Known As: Arc Tangent, Arctangent
Examples:
 <?php
 echo(atan2(5,5) . "<br />");
 echo(atan2(-3,4))
 ?>

This will return:
0.78539816339745
-0.64350110879328