note 118695 added to class.recursivedirectoryiterator

From: Date: Wed, 20 Jan 2016 14:50:04 +0000
Subject: note 118695 added to class.recursivedirectoryiterator
Groups: php.notes 
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I tried to use RecursiveDirectoryIterator to dump all files (and theirs properties, such as size/is_link/is_dir/mtime/perms/owner/group) from a large directory (~400.000 files), filtering some specific wanted files/folders. Using RecursiveDirectoryIterator and SplFileInfo, dump was taking about 50 seconds to perform, but it was working. However, to improve performance, I decided to make another version of the same script, using only direct file functions, such as "readdir", "filesize", "filemtime", etc.., and adding recursivity myself (if(is_dir($path)) doRecursivity($path); After running it, script went from ~50s to only ~20s to complete (On Linux CentOS 7, SSD 300IPs). Strangely, on Windows 7, Sata3 (with exactly same files [mirrored]) the time went from ~63s to ~57s. I believe that this payload is due to the OO approach of SPL, which runs lots of unnecessary extra code to perform the same tasks with more reliability, while direct file funcions are more like alias to C corresponding functions, and thereover, must faster. So, if you're dealing with a large amount of files, using RecursiveDirectoryIterator is probably not the way to go. ---- Server IP: 72.52.91.14 Probable Submitter: 177.40.76.251 ---- Manual Page -- http://php.net/manual/en/class.recursivedirectoryiterator.php Edit -- https://master.php.net/note/edit/118695 Del: integrated -- https://master.php.net/note/delete/118695/integrated Del: useless -- https://master.php.net/note/delete/118695/useless Del: bad code -- https://master.php.net/note/delete/118695/bad+code Del: spam -- https://master.php.net/note/delete/118695/spam Del: non-english -- https://master.php.net/note/delete/118695/non-english Del: in docs -- https://master.php.net/note/delete/118695/in+docs Del: other reasons-- https://master.php.net/note/delete/118695 Reject -- https://master.php.net/note/reject/118695 Search -- https://master.php.net/manage/user-notes.php

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