AppendIterator::getIteratorIndex()

(PHP 5>=5.2.0,PHP 7)

Gets an index of iterators

说明

publicAppendIterator::getIteratorIndex(void) : int

Gets the index of the current inner iterator.

参数

此函数没有参数。

返回值

Returns aninteger,which is the zero-based index of the current inner iterator.

范例

Example#1AppendIterator.getIteratorIndex()basic example

<?php
$array_a = new ArrayIterator(array('a' => 'aardwolf', 'b' => 'bear', 'c' => 'capybara'));
$array_b = new ArrayIterator(array('apple', 'orange', 'lemon'));
$iterator = new AppendIterator;
$iterator->append($array_a);
$iterator->append($array_b);
foreach ($iterator as $key => $current) {
    echo $iterator->getIteratorIndex() . '  ' . $key . ' ' . $current . PHP_EOL;
}
?>

以上例程会输出：

0  a aardwolf
0  b bear
0  c capybara
1  0 apple
1  1 orange
1  2 lemon

参见

• AppendIterator::getInnerIterator() Gets the inner iterator
• AppendIterator::getArrayIterator() Gets the ArrayIterator