testing php script performance

[bilibytes]

hi there,

do anyone know a good php script performance tester? (free..)

thankyou

regards.

[chemlight]

I was thinking about how to speed test a php script, and I'm not sure.

I get the basics:

testing the first action

$i = 0;
while($i < 10000){
//do action 1
}
//return time
 

testing the second action

$i = 0;
while($i < 10000){
//do action 2
}
//return time
 

...hmmm...would getting the system time in microseconds at the beginning and end, and getting the difference work? sorry, but I just thought of that. I'll get back in a sec with confirmation or lack thereof.

[chemlight]

Found the anser at php manual.

Here is the code for testing time in microseconds:

<?php
/**
 * Simple function to replicate PHP 5 behaviour
 */
function microtime_float()
{
    list($usec, $sec) = explode(" ", microtime());
    return ((float)$usec + (float)$sec);
}
 
$time_start = microtime_float();
 
// Sleep for a while
usleep(100);
 
$time_end = microtime_float();
$time = $time_end - $time_start;
 
echo "Did nothing in $time seconds\n";
?>
 

[chemlight]

http://bytes.com/topic/php/answers/8...est-php-script

that should do it.

[bilibytes]

so the usleep() would be replaced by the script to test?

Nice thanks!

[TheServant]

Yeah, you will need microtime() function, which returns a float anyway.
As much as the script above probably works, really all you need to do is have something like:

$timer = explode( ' ', microtime() );
$start = $timer[1] + $timer[0];
 
***Your Code***
 
$timer = explode( ' ', microtime() );
echo( ($timer[1] + $timer[0])-$start );
 

[chemlight]

Thanks for the information. I had tried using date('u') initially, but that only returned all 0's.

[TheServant]

No worries. I did the same thing when I tried to make one last year before I was told about microtime().

[Markus]

Many PHP frameworks come with built-in benchmark testers. I especially like CodeIgniter's. http://codeigniter.com/user_guide/li...benchmark.html

[Markus]

Threads merged. Basically the same topic :)