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PC World 2001 August
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phptriad
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phptriadsetup2-11.exe
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pear
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Benchmark
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Timer.php
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PHP Script
|
2001-03-03
|
4KB
|
148 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: Timer.php,v 1.8 2001/03/03 06:35:25 sbergmann Exp $
//
/**
* Benchmark::Timer
*
* Purpose:
*
* Timing Script Execution, Generating Profiling Information
*
* Example:
*
* $timer = new Benchmark_Timer;
*
* $timer->start();
* $timer->setMarker('Marker 1');
* $timer->stop();
*
* $profiling = $timer->getProfiling();
*
* @author Sebastian Bergmann <sb@sebastian-bergmann.de>
* @version $Revision: 1.8 $
* @access public
*/
class Benchmark_Timer
{
/**
* Contains the markers
*
* @var array
* @access public
*/
var $markers = array();
/**
* Set "Start" marker.
*
* @see setMarker(), stop()
* @access public
*/
function start()
{
$this->setMarker('Start');
}
/**
* Set "Stop" marker.
*
* @see setMarker(), start()
* @access public
*/
function stop()
{
$this->setMarker('Stop');
}
/**
* Set marker.
*
* @param string name of the marker to be set
* @see start(), stop()
* @access public
*/
function setMarker($name)
{
$microtime = explode(' ', microtime());
$this->markers[$name] = $microtime[1] . substr($microtime[0], 1);
}
/**
* Returns the time elapsed betweens two markers.
*
* @param string $start start marker, defaults to "Start"
* @param string $end end marker, defaults to "Stop"
* @return double $time_elapsed time elapsed between $start and $end
* @access public
*/
function timeElapsed($start = 'Start', $end = 'Stop')
{
if (extension_loaded('bcmath')) {
return bcsub($this->markers[$end], $this->markers[$start], 6);
} else {
return $this->markers[$end] - $this->markers[$start];
}
}
/**
* Returns profiling information.
*
* $profiling[x]['name'] = name of marker x
* $profiling[x]['time'] = time index of marker x
* $profiling[x]['diff'] = execution time from marker x-1 to this marker x
* $profiling[x]['total'] = total execution time up to marker x
*
* @return array $profiling
* @access public
*/
function getProfiling()
{
$i = 0;
$total = 0;
$result = array();
foreach ($this->markers as $marker => $time) {
if ($marker == 'Start') {
$diff = '-';
} else {
if (extension_loaded('bcmath')) {
$diff = bcsub($time, $temp, 6);
$total = bcadd($total, $diff, 6);
} else {
$diff = $time - $temp;
$total = $total + $diff;
}
}
$result[$i]['name'] = $marker;
$result[$i]['time'] = $time;
$result[$i]['diff'] = $diff;
$result[$i]['total'] = $total;
$temp = $time;
$i++;
}
return $result;
}
}
?>