Traits, Interface and Abstract Class in PHP

Traits : 

Traits is kind of virtual path, in php we can't support multiple inheritance. So here comes the solution we can use multiple traits in a single class. 

Interface : 
Interface like a contact where we can declar properties & method And we can implement that on other class. 

Abstract : 
Sometimes we may come across a situation where we cannot provide implementation to all the methods in a class. We want to leave the  implementation to a class that extends it.

An abstract class cannot be instantiated. It provides an interface for other classes to extend. Abstract method doesn’t have an implementation.