gistfile1.txt

<?php

class Crud {
  public $person = [];

  function create($array){
    array_push($this->person,$array);
  }
  function read($id){
    $index = $this->searchIndex($id);
    echo "index number: {$id} name: {$this->person[$index]['name']}";
    // print_r ($this->person[$index]["name"]);
  }
  function update($id, $name){
    $index = $this->searchIndex($id);
    $this->person[$index]["name"] = $name;
  }
  function delete($id){
    $index = $this->searchIndex($id);
    unset($this->person[$index]);
  }
  function getPerson(){
    var_dump($this->person);
  }
  function searchIndex($id){
    foreach($this->person as $key => $value){
      if($value['id'] == $id){
        $index = $key; // [0]
      }
    }
    return $index;//2
  }
}

$person = new Crud;
$person->create(["id" => 1, "name" => "zarif"]);
$person->create(["id" => 2, "name" => "saiful"]);
$person->create(["id" => 3, "name" => "John"]);
$person->create(["id" => 4, "name" => "Doe"]);

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