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Current File : /proc/self/root/home/b8009/php-5.6.22/Zend/tests/generators//generator_method_by_ref.phpt
--TEST--
Generator methods can yield by reference
--FILE--
<?php

class Test implements IteratorAggregate {
    protected $data;

    public function __construct(array $data) {
        $this->data = $data;
    }

    public function getData() {
        return $this->data;
    }

    public function &getIterator() {
        foreach ($this->data as $key => &$value) {
            yield $key => $value;
        }
    }
}

$test = new Test([1, 2, 3, 4, 5]);
foreach ($test as &$value) {
    $value *= -1;
}

var_dump($test->getData());

?>
--EXPECT--
array(5) {
  [0]=>
  int(-1)
  [1]=>
  int(-2)
  [2]=>
  int(-3)
  [3]=>
  int(-4)
  [4]=>
  &int(-5)
}

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