Exemplo de traits

person.php

<?php

class Person
{
    protected $name;
    
    public function setName($name)
    {
        $this->name = ucwords($name);
    }
    
    public function getName()
    {
        return $this->name;
    }
}

class PetOwner extends Person
{
    
}

class Veterinarian extends Person
{
    
}