Php/docs/appenditerator.getiteratorindex

• PHP Manual
• AppendIterator
• Gets an index of iterators

AppendIterator::getIteratorIndex

(PHP 5 >= 5.2.0, PHP 7)

AppendIterator::getIteratorIndex — Gets an index of iterators

说明

public AppendIterator::getIteratorIndex ( ) : int

Gets the index of the current inner iterator.

参数

此函数没有参数。

返回值

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

范例

Example #1 AppendIterator.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