Example of Person w/ Builder.

Person.php

<?php

class Person {
    protected $firstName;
    protected $middleName;
    protected $lastName;
    protected $age;
    protected $gender;
    protected $height;

    public static function Builder()
    {
        return new class extends Person {

            public function build()
            {
                $person = new Person;
                foreach (get_object_vars($this) as $key => $value) {
                    $person->{$key} = $this->{$key};
                }
                return $person;
            }

            public function setFirstName($firstName)
            {
                $this->firstName = $firstName;
                return $this;
            }

            public function setMiddleName($middleName)
            {
                $this->middleName = $middleName;
                return $this;
            }

            public function setLastName($lastName)
            {
                $this->lastName = $lastName;
                return $this;
            }

            public function setAge($age)
            {
                $this->age = $age;
                return $this;
            }

            public function setGender($gender)
            {
                $this->gender = $gender;
                return $this;
            }

            public function setHeight($height)
            {
                $this->height = $height;
                return $this;
            }
        };
    }

    public function getFirstName()
    {
        return $this->firstName;
    }

    public function getMiddleName()
    {
        return $this->middleName;
    }

    public function getLastName()
    {
        return $this->lastName;
    }

    public function getAge()
    {
        return $this->age;
    }

    public function getGender()
    {
        return $this->gender;
    }

    public function getHeight()
    {
        return $this->height;
    }


}

$person = Person::Builder()->setFirstName('Steve')->setLastName('Crow')->build();
echo "Hello {$person->getFirstName()} {$person->getLastName()}!";

// Can't change the name
$person->setFirstName("Bob");