test.php

test.php

<?php
class Car {
  public static function test() {
    echo 'test';
  }
}

class TestService {
  private function model() {
    return 'Car';
  }

  public function getTest1(){
    echo Car::test();
  }
  public function getTest(){
  // echo $this->mode()::test();
  }
}

$app = new TestService();
$app->getTest1();

<?php

class Car 
{
    public static function test() 
    {
        echo 'test';
    }
}

class TestService 
{
    private function model() 
    {
        return 'Car';
    }

    public function getTest()
    {
        $ref = new ReflectionClass($this->model());
        $ref->getMethod('test')->invoke(null);
    }
}

$app = new TestService();
$app->getTest();