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<?php
//
// +------------------------------------------------------------------------+
// | PEAR :: Benchmark |
// +------------------------------------------------------------------------+
// | Copyright (c) 2001-2003 Sebastian Bergmann <[email protected]>. |
// +------------------------------------------------------------------------+
// | This source file is subject to version 3.00 of the PHP License, |
// | that is available at http://www.php.net/license/3_0.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 |
// | [email protected] so we can mail you a copy immediately. |
// +------------------------------------------------------------------------+
//
// $Id: Timer.php,v 1.7 2002/12/11 17:14:17 sebastian Exp $
//
/**
* Benchmark::Timer
*
* Purpose:
*
* Timing Script Execution, Generating Profiling Information
*
* Example with automatic profiling start, stop, and output:
*
* $timer =& new Benchmark_Timer(true);
* $timer->setMarker('Marker 1');
*
* Example without automatic profiling:
*
* $timer =& new Benchmark_Timer();
*
* $timer->start();
* $timer->setMarker('Marker 1');
* $timer->stop();
*
* $profiling = $timer->getProfiling();
* echo $profiling->getOutput(); // or $timer->display()
*
* Contributors:
* - Ludovico Magnocavallo <[email protected]>
* auto profiling and get_output() method
*
* @author Sebastian Bergmann <[email protected]>
* @version $Revision: 1.7 $
* @access public
*/
require_once 'PEAR.php';
class Benchmark_Timer extends PEAR
{
/**
* Contains the markers
*
* @var array
* @access private
*/
var $markers = array();
/**
* Auto-start and stop timer
*
* @var boolean
* @access private
*/
var $auto = false;
/**
* Max marker name length for non-html output
*
* @var integer
* @access private
*/
var $strlen_max = 0;
/**
* Constructor, starts profiling recording
*
* @access public
*/
function Benchmark_Timer($auto = false) {
$this->PEAR();
if ($auto) {
$this->auto = $auto;
$this->start();
}
}
/**
* Destructor, stops profiling recording
*
* @access private
*/
function _Benchmark_Timer() {
if ($this->auto) {
$this->stop();
$this->display();
}
}
/**
* Return formatted profiling information.
*
* @see getProfiling()
* @access public
*/
function getOutput()
{
if (function_exists('version_compare') &&
version_compare(phpversion(), '4.1', 'ge'))
{
$http = isset($_SERVER['SERVER_PROTOCOL']);
} else {
global $HTTP_SERVER_VARS;
$http = isset($HTTP_SERVER_VARS['SERVER_PROTOCOL']);
}
$total = $this->TimeElapsed();
$result = $this->getProfiling();
$dashes = "";
if ($http) {
$out = "<table border=1>\n";
$out .= '<tr><td> </td><td align="center"><b>time index</b></td><td align="center"><b>ex time</b></td><td align="center"><b>%</b></td></tr>'."\n";
} else {
$dashes = $out = str_pad("\n", ($this->strlen_max + 52), '-', STR_PAD_LEFT);
$out .= str_pad('marker', $this->strlen_max);
$out .= str_pad("time index", 22);
$out .= str_pad("ex time", 22);
$out .= "perct\n";
$out .= $dashes;
}
foreach ($result as $k => $v) {
$perc = (($v['diff'] * 100) / $total);
if ($http) {
$out .= "<tr><td><b>" . $v['name'] . "</b></td><td>" . $v['time'] . "</td><td>" . $v['diff'] . "</td><td align=\"right\">" . number_format($perc, 2, '.', '') . "%</td></tr>\n";
} else {
$out .= str_pad($v['name'], $this->strlen_max, ' ');
$out .= str_pad($v['time'], 22);
$out .= str_pad($v['diff'], 22);
$out .= str_pad(number_format($perc, 2, '.', '') . "%\n", 8, ' ', STR_PAD_LEFT);
}
$out .= $dashes;
}
if ($http) {
$out .= "<tr style='background: silver;'><td><b>total</b></td><td>-</td><td>${total}</td><td>100.00%</td></tr>\n";
$out .= "</table>\n";
} else {
$out .= str_pad('total', $this->strlen_max);
$out .= str_pad('-', 22);
$out .= str_pad($total, 22);
$out .= "100.00%\n";
$out .= $dashes;
}
return $out;
}
/**
* Prints the information returned by getOutput
*/
function display()
{
print $this->getOutput();
}
/**
* 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 = $total = $temp = 0;
$result = array();
foreach ($this->markers as $marker => $time) {
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;
$this->strlen_max = (strlen($marker) > $this->strlen_max ? strlen($marker) + 1 : $this->strlen_max);
$temp = $time;
$i++;
}
$result[0]['diff'] = '-';
$this->strlen_max = (strlen('total') > $this->strlen_max ? strlen('total') : $this->strlen_max);
$this->strlen_max += 4;
return $result;
}
}
?>
|
