RecursiveIteratorIterator::__construct

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

RecursiveIteratorIterator::__constructConstrói um RecursiveIteratorIterator

Descrição

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

Cria um RecursiveIteratorIterator a partir de um RecursiveIterator.

Parâmetros

iterator

O iterador a partir do qual está sendo construído. Pode ser um RecursiveIterator ou IteratorAggregate.

mode

Modo opcional. Valores possíveis são

flags

Opção opcional. Valores possíveis são RecursiveIteratorIterator::CATCH_GET_CHILD, que então ignorará exceções lançadas em chamadas para RecursiveIteratorIterator::getChildren().

Exemplos

Example #1 Iterando um 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;
}
?>

Saída com $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

Saída com $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

Saída com $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