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<?php
/**
* Iterate.php
*
* PHP version 4
*
* Copyright (c) 2001-2006 Sebastian Bergmann <sb@sebastian-bergmann.de>.
*
* This source file is subject to the New BSD license, That is bundled
* with this package in the file LICENSE, and is available through
* the world-wide-web at
* http://www.opensource.org/licenses/bsd-license.php
* If you did not receive a copy of the new BSDlicense 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.
*
* @category Benchmarking
* @package Benchmark
* @author Sebastian Bergmann <sb@sebastian-bergmann.de>
* @copyright 2002-2005 Sebastian Bergmann <sb@sebastian-bergmann.de>
* @license http://www.php.net/license/3_0.txt The PHP License, Version 3.0
* @version CVS: $Id$
* @link http://pear.php.net/package/Benchmark
*/
require_once 'Benchmark/Timer.php';
/**
* Provides timing and profiling information.
*
* Example 1
*
* <code>
* <?php
* require_once 'Benchmark/Iterate.php';
*
* $benchmark = new Benchmark_Iterate;
*
* function foo($string) {
* print $string . '<br>';
* }
*
* $benchmark->run(100, 'foo', 'test');
* $result = $benchmark->get();
* ?>
* </code>
*
* Example 2
*
* <code>
* <?php
* require_once 'Benchmark/Iterate.php';
*
* $benchmark = new Benchmark_Iterate;
*
* class MyClass {
* function foo($string) {
* print $string . '<br>';
* }
* }
*
* $benchmark->run(100, 'myclass::foo', 'test');
* $result = $benchmark->get();
* ?>
* </code>
*
* Example 3
*
* <code>
* <?php
* require_once 'Benchmark/Iterate.php';
*
* $benchmark = new Benchmark_Iterate;
*
* class MyClass {
* function foo($string) {
* print $string . '<br>';
* }
* }
*
* $o = new MyClass();
*
* $benchmark->run(100, 'o->foo', 'test');
* $result = $benchmark->get();
* ?>
* </code>
*
* @category Benchmarking
* @package Benchmark
* @author Sebastian Bergmann <sb@sebastian-bergmann.de>
* @copyright 2002-2005 Sebastian Bergmann <sb@sebastian-bergmann.de>
* @license http://www.php.net/license/3_0.txt The PHP License, Version 3.0
* @link http://pear.php.net/package/Benchmark
*/
class Benchmark_Iterate extends Benchmark_Timer
{
/**
* Benchmarks a function or method.
*
* @access public
* @return void
*/
function run()
{
$arguments = func_get_args();
$iterations = array_shift($arguments);
$function_name = array_shift($arguments);
if (is_string($function_name) && strstr($function_name, '::')) {
$function_name = explode('::', $function_name);
$objectmethod = $function_name[1];
}
if (is_string($function_name) && strstr($function_name, '->')) {
list($objectname, $objectmethod) = explode('->', $function_name);
$object = $GLOBALS[$objectname];
for ($i = 1; $i <= $iterations; $i++) {
$this->setMarker('start_' . $i);
call_user_func_array(array($object, $objectmethod), $arguments);
$this->setMarker('end_' . $i);
}
return(0);
}
for ($i = 1; $i <= $iterations; $i++) {
$this->setMarker('start_' . $i);
call_user_func_array($function_name, $arguments);
$this->setMarker('end_' . $i);
}
}
/**
* Returns benchmark result.
*
* $result[x ] = execution time of iteration x
* $result['mean' ] = mean execution time
* $result['iterations'] = number of iterations
*
* @param bool $simple_output Show just the total
*
* @return array
* @access public
*/
function get($simple_output = false)
{
$result = array();
$total = 0;
$iterations = count($this->markers)/2;
for ($i = 1; $i <= $iterations; $i++) {
$time = $this->timeElapsed('start_'.$i, 'end_'.$i);
if (extension_loaded('bcmath')) {
$total = bcadd($total, $time, 6);
} else {
$total = $total + $time;
}
if (!$simple_output) {
$result[$i] = $time;
}
}
if (extension_loaded('bcmath')) {
$result['mean'] = bcdiv($total, $iterations, 6);
} else {
$result['mean'] = $total / $iterations;
}
$result['iterations'] = $iterations;
return $result;
}
}
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