AppendIterator::getInnerIterator

Gets the inner iterator

&reftitle.description; public `Iterator` `AppendIterator::getInnerIterator`

This method returns the current inner iterator.

&reftitle.parameters; &no.function.parameters;
&reftitle.returnvalues;

The current inner iterator, or &null; if there is not one.

&reftitle.examples;

### `AppendIterator::getInnerIterator` example

    <?php
    $array_a = new ArrayIterator(array('a' => 'aardwolf', 'b' => 'bear', 'c' => 'capybara'));
    $array_b = new RegexIterator($array_a, '/^[ac]/');

    $iterator = new AppendIterator;
    $iterator->append($array_a);
    $iterator->append($array_b);

    foreach ($iterator as $current) {
        $inner = $iterator->getInnerIterator();
        if ($inner instanceOf RegexIterator) {
            echo 'Filtered: ';
        } else {
            echo 'Original: ';
        }
        echo $current . PHP_EOL;
    }
    ?>

&example.outputs;

    Original: aardwolf
    Original: bear
    Original: capybara
    Filtered: aardwolf
    Filtered: capybara

&reftitle.seealso;

- `AppendIterator::getIteratorIndex`