Traits in PHP

If you worked with abstract objects before, you are aware of the single inheritance limitation, traits fix this in a very elegant way to allow us to write re-usable code.

Creating traits

Traits are created using the trait keyword:


trait MyTrait {

    function my_function()
    {
       echo 'My first trait';
    }

}

Using traits

To add a trait to a class, use the use keyword within the class:


class MyClass {

    use MyTrait;

}

That’s it! now you have all the trait’s methods available, to use multiple traits you can declare them on the same line separating them with a comma:


class MyClass {
    use MyTrait, MySecondTrait;

}

Note: traits can’t be instantiated.