Create 500 folder and each one nested 1000 files and destroy them with php

createFiles.sh

#!/usr/bin/env bash
mkdir hugeNumberOfFiles
for i in `seq 500`; do mkdir hugeNumberOfFiles/$i; for j in `seq 1000`; do touch hugeNumberOfFiles/$i/$j.txt; done; done

for i in `seq 4`; do cp -r hugeNumberOfFiles hugeNumberOfFiles$i; done

# hugeNumberOfFiles -> 500 folders and nested total 500000 files

deleteThem.php

<?php
$total_start = microtime(true);

function rrmdir($dir)
{
	if (is_dir($dir)) {
		$objects = scandir($dir);
		foreach ($objects as $object) {
			if ($object != "." && $object != "..") {
				if (filetype($dir . "/" . $object) == "dir") {
					rrmdir($dir . "/" . $object);
				} else {
					unlink($dir . "/" . $object);
				}
			}
		}
		reset($objects);
		rmdir($dir);
	}
}

function rrmdirDI($path) {
	// Remove a dir (all files and folders in it)
	$i = new DirectoryIterator($path);
	foreach($i as $f) {
		if($f->isFile()) {
			unlink($f->getRealPath());
		} 
		else if(!$f->isDot() && $f->isDir()) {
			rrmdirDI($f->getRealPath());
			rmdir($f->getRealPath());
		}
	}
}

$start = microtime(true);
exec('rm -rf hugeNumberOfFiles4');
echo "exec " . (microtime(true) - $start) . " sn\n";


$start = microtime(true);
shell_exec('rm -rf hugeNumberOfFiles3');
echo "shell_exec " . (microtime(true) - $start) . " sn\n";

$start = microtime(true);
rrmdir('hugeNumberOfFiles2');
echo "rrmdir [scandir] " . (microtime(true) - $start) . " sn\n";

$start = microtime(true);
rrmdirDI('hugeNumberOfFiles1');
echo "rrmdirDI [DirectoryIterator] " . (microtime(true) - $start) . " sn\n\n";

echo "Toplam süre: " . (microtime(true) - $total_start) . " sn\n";

Son olarak:

# php
exec 4.9801368713379 sn
shell_exec 6.2770390510559 sn
rrmdir [scandir] 8.6372098922729 sn
rrmdirDI [DirectoryIterator] 11.923294782639 sn

Toplam süre: 31.823668956757 sn
# Konsol
start=$(date +"%s.%N"); rm -rf hugeNumberOfFiles; end=$(date +"%s.%N");
echo "$end - $start" | bc
7.607972800 sn