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<?php class obj implements arrayaccess { private $container = array(); public function __construct() { $this->container = array('a' => 1, 'b' => 2, 'c' => 3); } public function offsetSet($offset, $value) { if (is_null($offset)) { $this->container[] = $value; } else { $this->container[$offset] = $value; } } public function offsetExists($offset) { return isset($this->container[$offset]); } public function offsetUnset($offset) { unset($this->container[$offset]); } public function offsetGet($offset) { return isset($this->container[$offset]) ? $this->container[$offset] : null; } } $obj = new obj; extract($obj); var_dump($a, $b, $c);

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