RecursiveIteratorIterator::__construct

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

    RecursiveIteratorIterator::__construct — Construit 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

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    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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