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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Licensed under the Creative Commons Attribution License v3.0 or later.
https://secure.php.net/manual/en/recursiveiteratoriterator.construct.php