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RecursiveIteratorIterator::__construct

RecursiveIteratorIterator::__construct

(PHP 5 >= 5.1.3, PHP 7)

RecursiveIteratorIterator::__construct — Construct a RecursiveIteratorIterator

Description

public RecursiveIteratorIterator::__construct ( Traversable $iterator [, int $mode = RecursiveIteratorIterator::LEAVES_ONLY [, int $flags = 0 ]] )

Creates a RecursiveIteratorIterator from a RecursiveIterator.

Parameters

iterator

The iterator being constructed from. Either a RecursiveIterator or IteratorAggregate.

mode

Optional mode. Possible values are

  • RecursiveIteratorIterator::LEAVES_ONLY - The default. Lists only leaves in iteration.

  • RecursiveIteratorIterator::SELF_FIRST - Lists leaves and parents in iteration with parents coming first.

  • RecursiveIteratorIterator::CHILD_FIRST - Lists leaves and parents in iteration with leaves coming first.

flags

Optional flag. Possible values are RecursiveIteratorIterator::CATCH_GET_CHILD which will then ignore exceptions thrown in calls to RecursiveIteratorIterator::getChildren().

Return Values

No value is returned.

Examples

Example #1 Iterating a RecursiveIteratorIterator

<?php $array = array(     array(         array(             array(                 'leaf-0-0-0-0',                 'leaf-0-0-0-1'             ),             'leaf-0-0-0'         ),         array(             array(                 'leaf-0-1-0-0',                 'leaf-0-1-0-1'             ),             'leaf-0-1-0'         ),         'leaf-0-0'     ) $iterator = new RecursiveIteratorIterator(     new RecursiveArrayIterator($array),     $mode foreach ($iterator as $key => $leaf) {     echo "$key => $leaf", PHP_EOL; } ?>

Output with $mode = RecursiveIteratorIterator::LEAVES_ONLY

0 => leaf-0-0-0-0 1 => leaf-0-0-0-1 0 => leaf-0-0-0 0 => leaf-0-1-0-0 1 => leaf-0-1-0-1 0 => leaf-0-1-0 0 => leaf-0-0

Output with $mode = RecursiveIteratorIterator::SELF_FIRST

0 => Array 0 => Array 0 => Array 0 => leaf-0-0-0-0 1 => leaf-0-0-0-1 1 => leaf-0-0-0 1 => Array 0 => Array 0 => leaf-0-1-0-0 1 => leaf-0-1-0-1 1 => leaf-0-1-0 2 => leaf-0-0

Output with $mode = RecursiveIteratorIterator::CHILD_FIRST

0 => leaf-0-0-0-0 1 => leaf-0-0-0-1 0 => Array 1 => leaf-0-0-0 0 => Array 0 => leaf-0-1-0-0 1 => leaf-0-1-0-1 0 => Array 1 => leaf-0-1-0 1 => Array 2 => leaf-0-0 0 => Array

← RecursiveIteratorIterator::callHasChildren

RecursiveIteratorIterator::current →

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https://secure.php.net/manual/en/recursiveiteratoriterator.construct.php