RecursiveIteratorIterator::__construct

(PHP 5 >= 5.1.3, PHP 7, PHP 8)

RecursiveIteratorIterator::__constructConstruit un objet RecursiveIteratorIterator

Description

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

Crée un objet RecursiveIteratorIterator depuis un objet RecursiveIterator.

Liste de paramètres

iterator

L'itérateur utilisé pour la construction. Soit la méthode RecursiveIterator ou de la méthode IteratorAggregate.

mode

Le mode (optionnel). Les valeurs possibles sont :

flags

Drapeau optionnel. Les valeurs possibles sont RecursiveIteratorIterator::CATCH_GET_CHILD utilisé pour ignorer les exceptions lançées depuis les appels à la méthode RecursiveIteratorIterator::getChildren().

Exemples

Exemple #1 Parcours d'un 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;
}
?>

Affichage avec $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

Affichage avec $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

Affichage avec $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

add a note

User Contributed Notes 2 notes

up
2
Tom
13 years ago
Note: the missing documentation of the argument list for this constructor is currently as follows (according to source code).

Param iter: see RecursiveIterator

Param mode:
- LEAVES_ONLY = (default) only iterate leaves
- SELF_FIRST = iterate parents prior to children
- CHILD_FIRST = iterate children prior to parents

Param flags:
- CATCH_GET_CHILD = ignore exceptions in getChildren() call
up
2
Matt Creenan
14 years ago
Note that LEAVES_ONLY, SELF_FIRST and CHILD_FIRST do not work by themselves.

They are class constants so you need to use RecursiveIteratorIterator::LEAVES_ONLY, etc.
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