How to update your code to github?

• git commit -m "change code name"
• $ git remote add github git@github.com:username/repositoryurl
• git push origin master

Basic OOPS Concept

Before we start PHP lets go to basic OOPS Principles one by one-

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Object oriented programming (OOP) was first introduced in php4. Area for oop in php version 4 was not very vast. There were only few features available in php4. Major concept of the object oriented programming in PHP is introduced from version 5(we commonly known as php5). Also php community has plan to modify its object model structure in more better manner in php6(not released yet). But still in php5 object model is designed nicely. If you have good understanding of OOP then you can create very good architecture of your php application. You only need to know some of the basic principles of object oriented programming and how to implement that concept of oop in php.

• Class − This is a programmer-defined data type, which includes local functions as well as local data. You can think of a class as a template for making many instances of the same kind (or class) of object.

• Object − An individual instance of the data structure defined by a class. You define a class once and then make many objects that belong to it. Objects are also known as instance.

• Inheritance − When a class is defined by inheriting existing function of a parent class then it is called inheritance. Here child class will inherit all or few member functions and variables of a parent class.

• Polymorphism − This is an object oriented concept where same function can be used for different purposes. For example function name will remain same but it make take different number of arguments and can do different task.

• Data Abstraction − Any representation of data in which the implementation details are hidden (abstracted).

• Encapsulation − refers to a concept where we encapsulate all the data and member functions together to form an object.

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PHP started out as a small open source project that evolved as more and more people found out how useful it was. Rasmus Lerdorf unleashed the first version of PHP way back in 1994.

• PHP is a recursive acronym for "PHP: Hypertext Preprocessor".

• PHP is a server side scripting language that is embedded in HTML. It is used to manage dynamic content, databases, session tracking, even build entire e-commerce sites.

• It is integrated with a number of popular databases, including MySQL, PostgreSQL, Oracle, Sybase, Informix, and Microsoft SQL Server.

• PHP is pleasingly zippy in its execution, especially when compiled as an Apache module on the Unix side. The MySQL server, once started, executes even very complex queries with huge result sets in record-setting time.

• PHP supports a large number of major protocols such as POP3, IMAP, and LDAP. PHP4 added support for Java and distributed object architectures (COM and CORBA), making n-tier development a possibility for the first time.

• PHP is forgiving: PHP language tries to be as forgiving as possible.

• PHP Syntax is C-Like.

Common uses of PHP

• PHP performs system functions, i.e. from files on a system it can create, open, read, write, and close them.

• PHP can handle forms, i.e. gather data from files, save data to a file, thru email you can send data, return data to the user.

• You add, delete, modify elements within your database thru PHP.

• Access cookies variables and set cookies.

• Using PHP, you can restrict users to access some pages of your website.

• It can encrypt data.