This highly interactive course introduces you to fundamental programming concepts in PHP, one of the most popular languages in the world. It begins with a simple Hello world program and proceeds on to cover common concepts such as Conditional Statements, Loop Statements, and Logic in PHP. 

It then reflects upon the idea of Functions and Arrays, as well as the power they give to the programmer to write better code. 

Finally, it dives deeper in order to teach about advanced concepts such as Classes, Inheritance and Exception Handling in PHP. By the time you're done, you'll have a good grip on the basics of PHP, and will be ready to study advanced concepts.

Learn PHP from Scratch

## $this

The pseudo-variable `$this` refers to a member of a class according to an instance of that class. It provides a reference to the calling object, that is the object to which the method or property belongs to. Note that the member of the class must be non-static.

### The Object Operator
The `->` symbol is a built-in construct in PHP that is used with the `$this` keyword to access contained **methods** and **properties**.

## self
In PHP, like many other languages, the `self` keyword refers to properties and methods inside the scope of a class. This pseudo-variable provides a reference to the calling object, that is the object to which the method or property belongs to.

### The Scope Resolution Operator
The `::` symbol, known as the *scope resolution operator* is an in-built construct in PHP that is used to access contained **methods** and **properties**. It is used with the `self` keyword.

> ## this versus self
> * Use `$this->member` for accessing *non-static* members (methods and properties). 
> * Use `self::$member` for accessing [static](http://php.net/manual/en/language.oop5.static.php) members (methods and properties).

## Example
Run the code below to see how you can use `$this` and `self` in PHP.


# $this

The pseudo-variable `$this` refers to a member of a class according to an instance of that class. It provides a reference to the calling object, that is the object to which the method or property belongs to. Note that the member of the class must be non-static.

## The Object Operator
The `->` symbol is a built-in construct in PHP that is used with the `$this` keyword to access contained **methods** and **properties**.

# self
In PHP, like many other languages, the `self` keyword refers to properties and methods inside the scope of a class. This pseudo-variable provides a reference to the calling object, that is the object to which the method or property belongs to.

## The Scope Resolution Operator
The `::` symbol, known as the *scope resolution operator* is an in-built construct in PHP that is used to access contained **methods** and **properties**. It is used with the `self` keyword.

> ## this versus self
> * Use `$this->member` for accessing *non-static* members (methods and properties). 
> * Use `self::$member` for accessing [static](http://php.net/manual/en/language.oop5.static.php) members (methods and properties).

# Example
Run the code below to see how you can use `$this` and `self` in PHP.


# $this

The pseudo-variable `＄this` refers to a member of a class according to an instance of that class. It provides a reference to the calling object, that is the object to which the method or property belongs to. Note that the member of the class must be non-static.

## The Object Operator
The `->` symbol is a built-in construct in PHP that is used with the `＄this` keyword to access contained **methods** and **properties**.

# self
In PHP, like many other languages, the `self` keyword refers to properties and methods inside the scope of a class. This pseudo-variable provides a reference to the calling object, that is the object to which the method or property belongs to.

## The Scope Resolution Operator
The `::` symbol, known as the *scope resolution operator* is an in-built construct in PHP that is used to access contained **methods** and **properties**. It is used with the `self` keyword.

> ## this versus self
> * Use `＄this->member` for accessing *non-static* members (methods and properties). 
> * Use `self::＄member` for accessing [static](http://php.net/manual/en/language.oop5.static.php) members (methods and properties).

# Example
Run the code below to see how you can use `＄this` and `self` in PHP.


This lesson discusses the use of this and self in accessing members in classes.

Getting Started

Variables

Operators

Conditional Statements

Loops

Functions

Strings

Arrays

PHP Assessment 1

Classes and Inheritance

Exception Handling

PHP Assessment 2

$this and self

$this

The Object Operator

self

The Scope Resolution Operator

this versus self

Example