note 79396 deleted from function.glob by bjori
| From: | bjori@php.net | Date: | Fri, 21 Dec 2007 17:15:24 +0000 |
| Subject: | note 79396 deleted from function.glob by bjori | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-133868@lists.php.net to get a copy of this message | ||
Note Submitter: David from CodeXplorer
----
After much testing I find that although glob() is much cleaner than opendir(), it is also much
slower.
I started by making a dir called "cache" in which I placed a single 65k html file filled
with whitespace (just so I could have a large filesize without worrying about char output).
Based on the code below
<?php
//Waste a little time to offset PHP's startup.
for($i=0; $i<20; $i++) {
print ' ';
}
$start_time = time()+microtime(true);
ob_start();
for($x=0; $x < 20; $x++) {
$dir = 'cache/';
if (is_dir($dir)) {
if ($dh = opendir($dir)) {
while (($file = readdir($dh)) !== false) {
//Include the file
include($file);
//$value = rand(0, 10000) * 2345678;
}
closedir($dh);
}
}
}
ob_end_clean();
print ((time()+microtime(true)) - $start_time). ' (opendir time)<br />';
$start_time = time()+microtime(true);
ob_start();
for($x=0; $x < 20; $x++) {
//Include the function files
foreach (glob("cache/*.html") as $file) {
//Include the file
include($file);
//$value = rand(0, 10000) * 2345678;
}
}
ob_end_clean();
print ((time()+microtime(true)) - $start_time). ' (glob time)<br />';
?>
The result was:
0.0069890022277832 (opendir time)
0.027945041656494 (glob time)
So I can honestly recommend opendir if you plan on including the files in the dir.