Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:29000
Mailing-List: contact internals-help@lists.php.net; run by ezmlm
Received-SPF: error (pb1.pair.com: domain cyanox.nl from 62.163.191.140 cause and error)
Message-ID: <462E6C6E.9020900@cyanox.nl>
Date: Tue, 24 Apr 2007 22:45:34 +0200
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.0.8) Gecko/20061115 Thunderbird/1.5.0.8 Mnenhy/0.7.4.666
MIME-Version: 1.0
To: "internals@lists.php.net" <internals@lists.php.net>
References: <op.tq96a21tps3mh7@dominus.blog.de> <462DD77B.7070006@zend.com> <op.tq99j1raps3mh7@dominus.blog.de>
In-Reply-To: <op.tq99j1raps3mh7@dominus.blog.de>
Content-Type: text/plain; charset=ISO-8859-15; format=flowed
Content-Transfer-Encoding: 7bit
Subject: Re: [PHP-DEV] require_once
From: mark@cyanox.nl ("mark@cyanox.nl")

dletz@blog.de wrote:
> Wow thats fast!
>
> On my machine i get these results:
> Win32 (PHP 5.2.1 CLI)
>
> require_once - 1.7735 sec
> myrequire_once - 1.0973 sec 

I made two benchmarks one with relative paths and one with full paths.

The full paths:

<?
$start_time = microtime(true);
define('BASEPATH', dirname(__FILE__).'/');
function myrequire_once($file)
{
    static $loaded = array();
    if (!array_key_exists($file, $loaded))
    {
        $loaded[$file] = 1;
        require $file;
    }
}

for ($i=0;$i<1000;$i++) {
//    require_once(BASEPATH.'manyClasses/'.$i.'.class.php');
    myrequire_once(BASEPATH.'manyClasses/'.$i.'.class.php');
}

$execution_time = microtime(true) - $start_time;
echo number_format($execution_time,4)."\n";
?>

Here the benchmarks with relative paths:


Ubuntu 6.10, intel core 2 duo 1.66Ghz (It only uses one core afaik).
PHP 5.2.0 (cli) (built: Mar 16 2007 19:40:08)
require_once        0.1123
myrequire_once   0.2582

Ubuntu 6.10, Pentium 4 3Ghz (Dual core also but probably only using one 
core).
PHP 5.1.6 (cli) (built: Mar  7 2007 12:48:25)
require_once        0.0984
myrequire_once   0.2800

Ubuntu 7.04, AMD 64bit 3700+.
PHP 5.2.1 (cli) (built: Feb 20 2007 20:11:58)
require_once        0.0663
myrequire_once   0.1639

Windows 2000, AMD 64bit 3200+.
PHP 5.1.4 (cli) (built: May  4 2006 10:35:22)
require_once        0.1590
myrequire_once   0.5190


With full paths:


Ubuntu 6.10, intel core 2 duo 1.66Ghz (It only uses one core afaik).
PHP 5.2.0 (cli) (built: Mar 16 2007 19:40:08)
require_once        0.1032
myrequire_once   0.3082

Ubuntu 6.10, Pentium 4 3Ghz (Dual core also but probably only using one 
core).
PHP 5.1.6 (cli) (built: Mar  7 2007 12:48:25)
require_once        0.0967
myrequire_once   0.2944

Ubuntu 7.04, AMD 64bit 3700+.
PHP 5.2.1 (cli) (built: Feb 20 2007 20:11:58)
require_once        0.0634
myrequire_once   0.1528

Windows 2000, AMD 64bit 3200+.
PHP 5.1.4 (cli) (built: May  4 2006 10:35:22)
require_once        0.2115
myrequire_once   0.6158

now I only have one windows system to test on but from this test it 
seems that the full path version is slower on windows then the relative 
paths. Which struck me as odd so I actually reran the tests several times.

The myrequire_once function is generally slower across my test cases 
then require_once.