Last updated: Fri, 24 Feb 2012

A classe ParentIterator

Introdução

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Sinopse da classe

ParentIterator extends RecursiveFilterIterator implements RecursiveIterator , OuterIterator , Traversable , Iterator {

/* Métodos */

public bool accept ( void )

public __construct ( RecursiveIterator $iterator )

ParentIterator getChildren ( void )

bool hasChildren ( void )

void next ( void )

void rewind ( void )

}

Índice

ParentIterator::accept — Determines acceptability
ParentIterator::__construct — Constructs a ParentIterator
ParentIterator::getChildren — Retorna os filhos do iterador interno de um ParentIterator
ParentIterator::hasChildren — Verifica se o elemento atual do iterador interno tem ou não filhos
ParentIterator::next — Avança o iterador
ParentIterator::rewind — Recomeça o iterador

User Contributed Notes
ParentIterator

Anonymous
19-Dec-2011 05:55


ParentIterator is just a RecursiveFilterIterator whos accept() method calls the RecursiveFilterIterator->hasChildren() method to filter itself.



Basically, it filters out leaf nodes. For example



This would yield all files and directories

<?php

$rdi = new RecursiveDirectoryIterator(__DIR__);

$iter = new RecursiveIteratorIterator($rdi, RecursiveIteratorIterator::CHILD_FIRST);

?>



wrapping that in a ParentIterator would filter it down to just directories

<?php

$rdi = new RecursiveDirectoryIterator(__DIR__);

$iter = new RecursiveIteratorIterator($rdi, RecursiveIteratorIterator::CHILD_FIRST);

$dirsOnly = new ParentIterator($iter);

?>

ParentIterator::accept

NoRewindIterator::valid

Last updated: Fri, 24 Feb 2012