Prettyman - Learn PHP 7: object oriented modular programming using HTML5, CSS3, Javascript, XML, JSON, and MySQL

Procedural language A procedural programming language includes functions/methods that can be called from the main flow of the program . The flow of the program jumps to the function / method , executes the code within the module , and then returns to the next statement in the main flow of the program. Some Procedural languages include a main function / method that automatically is called when the program is executed .

Object - oriented language An object - oriented language uses classes and objects. Classes are similar to blue prints. A class describes what an object can contain , including properties / variables and functions / methods. An object is an instance of a class ( like a building that has been created from a blueprint ). Object - oriented languages provide polymorphism , encapsulation , and inheritance. Objects are naturally encapsulated by containing all related functions / methods and properties / variables within the object itself. Polymorphism allows duplicate method / function names within object - oriented objects. However , the signature must be different. The signature is the combination of the types of variables ( numbers and characters ) passed into the method / function and the type of information passed out of a method / function. For example , several add methods could be created one that only accepts integers ( whole numbers ), one that only accepts floating point numbers ( numbers with decimals ), and one that accepts a combination. The program will determine which method / function to call by what has been passed into the method / function. Inheritance in object - oriented programming allows an object to inherit properties / variables and functions / methods from another object. The object can also override those items inherited. This is similar to a child inheriting characteristics from the parents. Object - oriented languages can also be event - driven. An event - driven program will sleep until an event occurs. This is similar to an ATM machine program waiting for a user to input an ATM card .

Open source language An open source programming language is developed by a community of interested parties. The community accepts input from fellow programmers for suggested upgrades and corrections. Several members of the community work together to present proposals and to make changes to the language. Open source languages are free . A non - open source language ( such as Microsoft C #) is created and updated by a company or major organization. Non - open source languages are not usually free .

WAMP / LAMP / MAMP Open source ( free ) combinations , including Apache Web Server , MySQL , and PHP for a specific operating system ( Windows , Linux , and Mac ). These packages are open source. The combination of software is used for creating dynamic web sites and web applications .