__sleep() method is called by serialize() before it packs up the object. : __sleep « Class « PHP

1. PHP
2. Class
3. __sleep

__sleep() method is called by serialize() before it packs up the object.

 
<?
class apple {
  var $flavor="sweet";
  var $frozen = 0;
  function ___sleep( ) {
    $this->frozen++;
    return array_keys( get_object_vars( $this) );
  }
}
$app = new apple ( );
$stored = serialize( $app );
print $stored;
?>
  
  

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