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Benchmark
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Iterate.php
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PHP Script
|
2001-03-03
|
4KB
|
138 lines
<?php
//
// +----------------------------------------------------------------------+
// | PHP version 4.0 |
// +----------------------------------------------------------------------+
// | Copyright (c) 1997-2001 The PHP Group |
// +----------------------------------------------------------------------+
// | This source file is subject to version 2.02 of the PHP license, |
// | that is bundled with this package in the file LICENSE, and is |
// | available at through the world-wide-web at |
// | http://www.php.net/license/2_02.txt. |
// | If you did not receive a copy of the PHP license and are unable to |
// | obtain it through the world-wide-web, please send a note to |
// | license@php.net so we can mail you a copy immediately. |
// +----------------------------------------------------------------------+
// | Authors: Sebastian Bergmann <sb@sebastian-bergmann.de> |
// +----------------------------------------------------------------------+
//
// $Id: Iterate.php,v 1.6 2001/03/03 06:36:44 sbergmann Exp $
//
require_once 'Benchmark/Timer.php';
/**
* Benchmark::Benchmark_Iterate
*
* Purpose:
*
* Benchmarking
*
* Example:
*
* require_once "Benchmark/Iterate.php";
* $benchmark = new Benchmark_Iterate;
*
* function foo($string)
* {
* print $string."<br>";
* }
*
* $benchmark->run(100, 'foo', 'test');
* $result = $benchmark->get();
*
* @author Sebastian Bergmann <sb@sebastian-bergmann.de>
* @version $Revision: 1.6 $
* @access public
*/
class Benchmark_Iterate extends Benchmark_Timer
{
// {{{ run()
/**
* Benchmarks a function.
*
* @access public
*/
function run()
{
// get arguments
$arguments = func_get_args();
$iterations = array_shift($arguments);
$function_name = array_shift($arguments);
// main loop
for ($i = 1; $i <= $iterations; $i++)
{
// set 'start' marker for current iteration
$this->setMarker('start_'.$i);
// call function to be benchmarked
call_user_func_array($function_name, $arguments);
// set 'end' marker for current iteration
$this->setMarker('end_'.$i);
}
}
// }}}
// {{{ get()
/**
* Returns benchmark result.
*
* $result[x ] = execution time of iteration x
* $result['mean' ] = mean execution time
* $result['iterations'] = number of iterations
*
* @return array $result
* @access public
*/
function get()
{
// init result array
$result = array();
// init variable
$total = 0;
$iterations = count($this->markers)/2;
// loop through iterations
for ($i = 1; $i <= $iterations; $i++)
{
// get elapsed time for current iteration
$time = $this->timeElapsed('start_'.$i , 'end_'.$i);
// sum up total time spent
if (extension_loaded('bcmath')) {
$total = bcadd($total, $time, 6);
} else {
$total = $total + $time;
}
// store time
$result[$i] = $time;
}
// calculate and store mean time
if (extension_loaded('bcmath')) {
$result['mean'] = bcdiv($total, $iterations, 6);
} else {
$result['mean'] = $total / $iterations;
}
// store iterations
$result['iterations'] = $iterations;
// return result array
return $result;
}
// }}}
}
?>