What's happening in our world

Home / Blog / Speed test of different versions of PHP

Wednesday 18th January 2017 Speed test of different versions of PHP

 During the process of building encoders and loaders we at SourceGuardian run a simple test for all the new loaders to quickly check if there are any issues before entering the thorough testing phase especially for new versions. We run the same PHP code both in source and encoded for different versions of PHP and calculate the execution time just for fun. This produces interesting results in fact. The code itself does not matter, it's a rough Pi approximation and you may find it below. For that test we changed the number of iterations up to 10 000 000 to increase the overall execution time and minimize time calculation error. Actual time does not really matter as well as the machine that runs the code, but you can see the obvious difference between versions of PHP! Have fun trying it yourself if you wish!
 
The code:
 
function microtime_float()
{
    list($usec, $sec) = explode(" ", microtime());
    return ((float)$usec + (float)$sec);
}
 
$t = microtime_float();
$pi = 4; $top = 4; $bot = 3; $minus = TRUE;
$accuracy = 10000000;
for($i = 0; $i < $accuracy; $i++)
{
  $pi += ( $minus ? -($top/$bot) : ($top/$bot) );
  $minus = ( $minus ? FALSE : TRUE);
  $bot += 2;
}
print "Pi ~=: " . $pi . "\n";
$t2 = microtime_float();
print ($t2-$t)."\n";

(we know about the optional argument of microtime() but unfortunately old PHP 1.8.x etc does not!)
 
Results:
 
 
Happy coding!
 
Best Regards,
Alexander
 

Posted on January 18th 2017 at 03:08pm
Labels: php speed

Leave a Comment

Your Name
Your Email Address
Your Website
Your Comment
Send Comments

Links

TRY SOURCEGUARDIAN FREE FOR 14 DAYS
Account Login:

login Forgotten Password?
Connect with us
Bookmark
facebook linkedin twitter rss
© Copyright 2002 - 2018 SourceGuardian Limited
Privacy Policy l Terms & Conditions l Company Info l Contact us l Sitemap l PHP Weekly News