Serialize objects into files in php

<?php
// classa.inc:
 
  class A {
      public $one = 1;
 
      public function show_one() {
          echo $this->one;
      }
  }
 
// page1.php:
 
  include("classa.inc");
 
  $a = new A;
  $s = serialize($a);
  // store $s somewhere where page2.php can find it.
  file_put_contents('store', $s);
 
// page2.php:
 
  // this is needed for the unserialize to work properly.
  include("classa.inc");
 
  $s = file_get_contents('store');
  $a = unserialize($s);
 
  // now use the function show_one() of the $a object.  
  $a->show_one();
?>