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  1. <?php
  2.     class Base {
  3.         private static $cache = array();
  4.  
  5.         public function &__get($name) {
  6.             $type = get_class($this);
  7.             if (!isset(self::$cache[$type])) {
  8.                 self::$cache[$type] = '';
  9.             }
  10.             return self::$cache[$type];
  11.         }
  12.  
  13.         public function __set($name, $value) {
  14.             $type = get_class($this);
  15.             self::$cache[$type] = $value;
  16.         }
  17.     }
  18.  
  19.     $b = new Base;
  20.     $b->cache = 42;
  21.     $b2 = new Base;
  22.  
  23.     echo $b->cache . "\n";  // 42
  24.     echo $b2->cache . "\n"; // also 42
  25. ?>
Success #stdin #stdout 0.02s 25936KB
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42
42
https://ideone.com/lXRVy2
language:
PHP (php 7.3.5)
created:
1 day ago
visibility:
public

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