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Added PEAR/Timer class for timing script execution and generating profiling information. This class is based upon a concept by Allan Kent shown in his article on PHPBuilder.com

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Sebastian Bergmann 2000-09-28 07:21:21 +00:00
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<?php
//
// +----------------------------------------------------------------------+
// | PHP version 4.0 |
// +----------------------------------------------------------------------+
// | Copyright (c) 1997, 1998, 1999, 2000 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@phpOpenTracker.de> |
// | (based upon code by Allan Kent <allan@itsolutions.co.za>) |
// +----------------------------------------------------------------------+
//
// $Id$
//
/**
* PEAR/Timer
*
* Purpose:
*
* Timing Script Execution, Generating Profiling Information
*
* Example:
*
* $timer = new Timer;
*
* $timer->start();
* $timer->set_marker( "Marker 1" );
* $timer->stop();
*
* $timer->profiling_information();
*
* @author Sebastian Bergmann <sb@phpOpenTracker.de>
* @version 1.0 28/09/00
* @access public
*/
class Timer
{
// {{{ properties
/**
* Contains the markers
* @var array
* @access public
*/
var $markers = array();
// }}}
// {{{ start()
/**
* Set "Start" marker.
* @brother stop()
* @access public
*/
function start()
{
$this->set_marker( "Start" );
}
// }}}
// {{{ stop()
/**
* Set "Stop" marker.
* @brother start()
* @access public
*/
function stop()
{
$this->set_marker( "Stop" );
}
// }}}
// {{{ set_marker()
/**
* Set marker.
* @brother stop()
* @access public
*/
function set_marker( $name )
{
$microtime = explode( " ", microtime() );
$this->markers[ $name ] = $microtime[ 1 ] . substr( $microtime[ 0 ], 1 );
}
// }}}
// {{{ time_elapsed()
/**
* 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 time_elapsed( $start = "Start", $end = "Stop" )
{
return bcsub( $this->markers[ $end ], $this->markers[ $start ], 6 );
}
// }}}
// {{{ profiling_information()
/**
* Prints profiling information.
* @access public
*/
function profiling_information()
{
print "<table border=\"0\" cellSpacing=\"3\" cellPadding=\"3\"><tr><td><b>Marker</b></td><td><b>Time</b></td><td><b>Diff</b></td></tr>";
while( list( $marker, $time ) = each( $this->markers ) )
{
print "<tr><td>" . $marker . "</td>";
print "<td>" . $time . "</td>";
if( $marker == "Start" )
{
$diff = "-";
}
else
{
$diff = bcsub( $time, $temp, 6 );
}
print "<td>" . $diff . "</td></tr>";
$temp = $time;
}
print "<tr><td>&nbsp;</td><td align=\"right\">Total:</td><td>" . $this->time_elapsed() . "</td></tr></table>";
}
// }}}
}
?>