AppendIterator::getIteratorIndex

(PHP 5 >= 5.1.0)

AppendIterator::getIteratorIndex — Gets an index of iterators

说明

public int AppendIterator::getIteratorIndex ( void )

Gets the index of the current inner iterator.

参数

此函数没有参数。

返回值

Returns an integer , 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