PHP SPL RegexIterator how files would be ordered?

问题

Let's say I have a snippet:

<?php
$directoryIterator = new RecursiveDirectoryIterator('some_dir_here');
$iteratorIterator = new RecursiveIteratorIterator($directoryIterator);
$regexp = '/hello_world[\d]*/';
$fileList = new RegexIterator($iteratorIterator, $regexp);
foreach ($fileList as $file) {
    echo $file . PHP_EOL;
}

It gets all files from some_dir_here, which match regexp.

How would be files in $fileList ordered (for example: by name ascending)? Are there any proofs in official docs?

回答1:

RecursiveDirectoryIterator uses opendir, which doesn't sort its results.

If you want sorted results, you can use scandir, but it's not recursive or iterative.

来源：https://stackoverflow.com/questions/57685464/php-spl-regexiterator-how-files-would-be-ordered