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   1  <?php
   2  
   3  /*
   4   * This file is part of the Symfony package.
   5   *
   6   * (c) Fabien Potencier <[email protected]>
   7   *
   8   * For the full copyright and license information, please view the LICENSE
   9   * file that was distributed with this source code.
  10   */
  11  
  12  namespace Symfony\Component\VarDumper\Cloner;
  13  
  14  /**
  15   * Represents the main properties of a PHP variable.
  16   *
  17   * @author Nicolas Grekas <[email protected]>
  18   */
  19  class Stub
  20  {
  21      public const TYPE_REF = 1;
  22      public const TYPE_STRING = 2;
  23      public const TYPE_ARRAY = 3;
  24      public const TYPE_OBJECT = 4;
  25      public const TYPE_RESOURCE = 5;
  26  
  27      public const STRING_BINARY = 1;
  28      public const STRING_UTF8 = 2;
  29  
  30      public const ARRAY_ASSOC = 1;
  31      public const ARRAY_INDEXED = 2;
  32  
  33      public $type = self::TYPE_REF;
  34      public $class = '';
  35      public $value;
  36      public $cut = 0;
  37      public $handle = 0;
  38      public $refCount = 0;
  39      public $position = 0;
  40      public $attr = [];
  41  
  42      private static $defaultProperties = [];
  43  
  44      /**
  45       * @internal
  46       */
  47      public function __sleep(): array
  48      {
  49          $properties = [];
  50  
  51          if (!isset(self::$defaultProperties[$c = static::class])) {
  52              self::$defaultProperties[$c] = get_class_vars($c);
  53  
  54              foreach ((new \ReflectionClass($c))->getStaticProperties() as $k => $v) {
  55                  unset(self::$defaultProperties[$c][$k]);
  56              }
  57          }
  58  
  59          foreach (self::$defaultProperties[$c] as $k => $v) {
  60              if ($this->$k !== $v) {
  61                  $properties[] = $k;
  62              }
  63          }
  64  
  65          return $properties;
  66      }
  67  }