RecursiveIteratorIterator クラス

導入

再帰的なイテレータの反復処理に使用します。

クラス概要

RecursiveIteratorIterator

RecursiveIteratorIterator implements OuterIterator , Traversable , Iterator {

/* メソッド */

public void beginChildren ( void )

public void beginIteration ( void )

public RecursiveIterator callGetChildren ( void )

public bool callHasChildren ( void )

__construct ( Traversable $iterator [, int $mode = LEAVES_ONLY [, int $flags = 0 ]] )

mixed current ( void )

public void endChildren ( void )

public void endIteration ( void )

int getDepth ( void )

public iterator getInnerIterator ( void )

public mixed getMaxDepth ( void )

RecursiveIterator getSubIterator ( void )

mixed key ( void )

void next ( void )

public void nextElement ( void )

void rewind ( void )

public void setMaxDepth ([ string $max_depth = -1 ] )

bool valid ( void )

/* 継承したメソッド */

public Iterator OuterIterator::getInnerIterator ( void )

}

RecursiveIteratorIterator::beginChildren — Begin children
RecursiveIteratorIterator::beginIteration — Begin Iteration
RecursiveIteratorIterator::callGetChildren — Get children
RecursiveIteratorIterator::callHasChildren — Has children
RecursiveIteratorIterator::__construct — Construct a RecursiveIteratorIterator
RecursiveIteratorIterator::current — 現在の要素の値にアクセスする
RecursiveIteratorIterator::endChildren — End children
RecursiveIteratorIterator::endIteration — End Iteration
RecursiveIteratorIterator::getDepth — 再帰的なイテレーションにおける現在の深さを取得する
RecursiveIteratorIterator::getInnerIterator — Get inner iterator
RecursiveIteratorIterator::getMaxDepth — Get max depth
RecursiveIteratorIterator::getSubIterator — 現在の有効なサブイテレータを取得する
RecursiveIteratorIterator::key — 現在のキーにアクセスする
RecursiveIteratorIterator::next — 次の要素に移動する
RecursiveIteratorIterator::nextElement — Next element
RecursiveIteratorIterator::rewind — トップレベルの内部イテレータの先頭要素にイテレータを巻き戻す
RecursiveIteratorIterator::setMaxDepth — Set max depth
RecursiveIteratorIterator::valid — 現在の位置が有効かどうかをチェックする

add a note User Contributed Notes
RecursiveIteratorIterator

Michiel Brandenburg
14-Jun-2009 11:40


You can use this to quickly find all the files (recursively) in a certain directory. This beats maintaining a stack yourself.

<?php

$directory = "/tmp/";

$fileSPLObjects =  new RecursiveIteratorIterator(

                new RecursiveDirectoryIterator($directory),

                RecursiveIteratorIterator::CHILD_FIRST

            );

try {

    foreach( $fileSPLObjects as $fullFileName => $fileSPLObject ) {

        print $fullFileName . " " . $fileSPLObject->getFilename() . "\n";

    }

}

catch (UnexpectedValueException $e) {

    printf("Directory [%s] contained a directory we can not recurse into", $directory);

}

?>

Note: if there is a directory contained within the directory you are searching in that you have no access to read an UnexpectedValueException will be thrown (leaving you with an empty list).

Note: objects returned are SPLFileObjects

crashrox at gmail dot com
19-Dec-2008 05:51


Recursive multidimensional array flatten using SPL





<?php


function array_flatten_recursive($array) {


    if($array) {


        $flat = array();


        foreach(new RecursiveIteratorIterator(new RecursiveArrayIterator($array), RecursiveIteratorIterator::SELF_FIRST) as $key=>$value) {


            if(!is_array($value)) {


                $flat[] = $value;


            }


        }


        


        return $flat;


    } else {


        return false;


    }


}





$array = array(


    'A' => array('B' => array( 1, 2, 3, 4, 5)),


    'C' => array( 6,7,8,9)


);





print_r(array_flatten_recursive($array));


?>


-- Returns:


Array (


    [0] => 1


    [1] => 2


    [2] => 3


    [3] => 4


    [4] => 5


    [5] => 6


    [6] => 7


    [7] => 8


    [8] => 9


)

add a note

RecursiveIteratorIterator::beginChildren

RecursiveFilterIterator::hasChildren

Last updated: Fri, 13 Nov 2009

RecursiveIteratorIterator クラス

導入

クラス概要

目次