Iteratoren in php u.a. als glob Ersatz per SPL um rekursiv zu suchen

gistfile1.php

<?php

$dir_iterator = new RecursiveDirectoryIterator("/path");
$iterator = new RecursiveIteratorIterator($dir_iterator, RecursiveIteratorIterator::SELF_FIRST);
// could use CHILD_FIRST if you so wish

foreach ($iterator as $file) {
    echo $file, "\n";
}

?>

Not to mention the fact that $file will be an SplFileInfo class, so you can do powerful stuff really easily:

<?php

$size = 0;
foreach ($iterator as $file) {
    if ($file->isFile()) {
        echo substr($file->getPathname(), 27) . ": " . $file->getSize() . " B; modified " . date("Y-m-d", $file->getMTime()) . "\n";
        $size += $file->getSize();
    }
}

echo "\nTotal file size: ", $size, " bytes\n";

?>

\Luna\luna.msstyles: 4190352 B; modified 2008-04-13
\Luna\Shell\Homestead\shellstyle.dll: 362496 B; modified 2006-02-28
\Luna\Shell\Metallic\shellstyle.dll: 362496 B; modified 2006-02-28
\Luna\Shell\NormalColor\shellstyle.dll: 361472 B; modified 2006-02-28
\Luna.theme: 1222 B; modified 2006-02-28
\Windows Classic.theme: 3025 B; modified 2006-02-28

Total file size: 5281063 bytes

in Contao:
<?php
//https://github.com/contao/core/blob/ea9a00c7b34edea8b9bf41414bf66c620eb6a3fa/system/bin/ide_compat#L40-L57
// Recursively scan all subfolders
	$objFiles = new \RecursiveIteratorIterator(
		new \RecursiveDirectoryIterator(
			TL_ROOT . '/system/modules/' . $strModule,
			\FilesystemIterator::UNIX_PATHS|\FilesystemIterator::FOLLOW_SYMLINKS|\FilesystemIterator::SKIP_DOTS
		)
	);
	// Get all PHP files
	foreach ($objFiles as $objFile) {
		if (pathinfo($objFile->getFilename(), PATHINFO_EXTENSION) == 'php') {
			$strRelpath = str_replace(TL_ROOT . '/system/modules/' . $strModule . '/', '', $objFile->getPathname());
			if (strncmp($strRelpath, 'assets/', 7) !== 0 && strncmp($strRelpath, 'config/', 7) !== 0 && strncmp($strRelpath, 'dca/', 4) !== 0 && strncmp($strRelpath, 'languages/', 10) !== 0 && strncmp($strRelpath, 'templates/', 10) !== 0) {
				$arrFiles[] = $strRelpath;
			}
		}
	}
?>

https://schlueters.de/blog/archives/112-MySQLi-Resultset-Iterator.html
http://www.a-coding-project.de/iteratoren-flexibele-arrays/

#fast nicht ganz
http://www.a-coding-project.de/csv-import-in-php/

#Offtopic:  Traits
http://www.a-coding-project.de/traits-mehrfachvererbung-in-php/