RecursiveIteratorIterator + RecursiveDirectoryIterator

filenames.php

<?php
namespace Acme;

$mode = \RecursiveIteratorIterator::LEAVES_ONLY;
//$mode = \RecursiveIteratorIterator::SELF_FIRST;
//$mode = \RecursiveIteratorIterator::CHILD_FIRST;

$iterator = new \RecursiveIteratorIterator(
    new \RecursiveDirectoryIterator(__DIR__ . DIRECTORY_SEPARATOR . 'DIR',
        \FilesystemIterator::CURRENT_AS_FILEINFO | // current()メソッドでSplFileInfoのインスタンスを返す
        \FilesystemIterator::KEY_AS_PATHNAME | // key()メソッドでパスを返す
        \FilesystemIterator::SKIP_DOTS // .(カレントディレクトリ)および..(親ディレクトリ)をスキップ
    ),
    $mode
);

echo '<pre>';
foreach ($iterator as $key => $node) {
    var_dump($node->getFilename());
}
echo '</pre>';

filter.php

<?php
namespace Acme;

class ExcludeFileFilterIterator extends \FilterIterator
{
    public function accept()
    {
        return $this->getInnerIterator()->current()->isDir();
    }
}

$iterator = new \RecursiveIteratorIterator(
    new \RecursiveDirectoryIterator(__DIR__ . DIRECTORY_SEPARATOR . 'DIR',
        \FilesystemIterator::CURRENT_AS_FILEINFO |
        \FilesystemIterator::KEY_AS_PATHNAME |
        \FilesystemIterator::SKIP_DOTS
    ),
    \RecursiveIteratorIterator::SELF_FIRST
);

$iterator = new ExcludeFileFilterIterator($iterator);
echo '<pre>';
foreach ($iterator as $key => $node) {
    var_dump($node->getFilename());
}
echo '</pre>';

glob.php

<?php
namespace Acme;

$iterator = new \RecursiveIteratorIterator(
    new \RecursiveDirectoryIterator(
        sprintf('glob://%s%sDIR%sDIR-1*', __DIR__, DIRECTORY_SEPARATOR, DIRECTORY_SEPARATOR),
        \FilesystemIterator::CURRENT_AS_FILEINFO |
        \FilesystemIterator::KEY_AS_PATHNAME |
        \FilesystemIterator::SKIP_DOTS
    ),
    \RecursiveIteratorIterator::SELF_FIRST
);
echo '<pre>';
foreach ($iterator as $key => $node) {
    var_dump($node->getFilename());
}
echo '</pre>';

phar.php

<?php
namespace Acme;
$iterator = new \RecursiveIteratorIterator(
    new \RecursiveDirectoryIterator('phar://silex.phar/',
        \FilesystemIterator::CURRENT_AS_FILEINFO |
        \FilesystemIterator::KEY_AS_PATHNAME |
        \FilesystemIterator::SKIP_DOTS
    ),
    \RecursiveIteratorIterator::LEAVES_ONLY
);

foreach ($iterator as $key => $node) {
    echo sprintf('<h1>%s</h1>',
        htmlspecialchars($node->getFilename(), ENT_QUOTES, 'UTF-8'));
    echo sprintf('<h2>%s</h2>',
        htmlspecialchars($node->getPathname(), ENT_QUOTES, 'UTF-8'));
    highlight_string(file_get_contents($key)); // FilesystemIterator::KEY_AS_PATHNAMEを指定してるのでキーでもOK
}