php oop crud

<?php

class Crud {
  public $person = [];

  function create($name){
    array_push($this->person, $name);
  }
  function read($id){
    echo "index number: {$id} {$this->person[$id]}";
  }
  function update($id, $name){
    $this->person[$id] = $name;
  }
  function delete($id){
      unset($this->person[$id]);
  }
  function getPerson(){
    var_dump($this->person);
  }
}

$person = new Crud;
$person->create("zarif");
$person->create("saiful");
$person->create("smith");
$person->create("John");
//$person->getPerson();

$person->read(0);
$person->update(2, "doe");
$person->getPerson();
$person->delete(0);
$person->getPerson();