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Bug #45505 DirectoryIterator default sorting error
Submitted: 2008-07-13 23:25 UTC Modified: 2008-07-14 14:22 UTC
From: jcknight at gmail dot com Assigned:
Status: Not a bug Package: SPL related
PHP Version: 5.2.6 OS: Linux
Private report: No CVE-ID: None
View Developer Edit
 [2008-07-13 23:25 UTC] jcknight at gmail dot com 
Description:
------------
The DirectoryIterator class does not iterate the directory how it is organized on the file system.

Reproduce code:
---------------
<?php

$dir = new DirectoryIterator(".");

foreach($dir as $file) {
    echo $file->current() ."\n";
}

?>

Expected result:
----------------
.
..
enter_L.gif
enter_R.gif
mad_L.gif
mad_R.gif

Actual result:
--------------
.
..
enter_L.gif
mad_L.gif
enter_R.gif
mad_R.gif

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 [2008-07-14 09:52 UTC] johannes@php.net 
Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to report
a bug at http://bugs.php.net/how-to-report.php

There is no sorting guaranteed and the files are returned in the order the operating system provides.
 [2008-07-14 14:22 UTC] jcknight at gmail dot com 
That is the problem, as it does not return the files in the order that the operating system provides.  In the file system, the order is:

enter_L.gif
enter_R.gif
mad_L.gif
mad_R.gif

but the DirectoryIterator provides the files as

enter_L.gif
mad_L.gif
enter_R.gif
mad_R.gif
 
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