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This class starts a timer on instantiation. You can then stop it whenever you want by calling the timer::timer_stop() function. Show the time between instantiation and stopping by calling timer::timer_show() function.
Both stopping and showing the timer is done by the timer::timer_stop_show() function. This gives you the time including milliseconds to 3 decimal places, but you can pass timer_show() and timer_stop_show() functions a number of decimal places to display instead.
Timer Class
@author Ben Barnett <ludge@spymac.com>
@version 1.1
Timing Class
When a new object is created, it immediately starts timing and only stops when
you call objectname->endtimer(). The calculations for finding time taken are not carried
out until they are ready to be displayed to avoid them effecting the timer results. Although I
doubt they'd make much difference.
| <?php
class timer
{
/**
* The start time of the timer
*/
var $starttime;
/**
* The end time of the timer
*/
var $endtime;
/**
* Constructor begins timer.
*/
function timer()
{
$this->starttime = microtime();
}
/**
* Stops the timer.
*/
function timer_stop()
{
$this->endtime = microtime();
}
/**
* Calculates and returns the time taken.
*
* Explodes the start and end time into arrays then totals up each array. Subtracts
* the start time from the end time to give time taken to the number of decimal places
* passed as a parameter.
*
* @param integer $decimals The number of decimal places to show in the timer. Default is 3.
* @return float The time taken between instantiating the class and stopping the timer.
*/
function timer_show($decimals=3)
{
// Make sure the parameter is an integer
$decimals = intval($decimals);
// Restrict decimal places to 8
if($decimals > 8)
{
$decimals = 8;
}
// Decimal places cannot be below zero!
if($decimals < 0)
{
$decimals = 0;
}
// Explode into arrays so that the decimal and UNIX timestamp can be added
$starttime = explode(" ", $this->starttime);
$endtime = explode(" ", $this->endtime);
// Add the decimal to the timestamp
$starttime = (float)$starttime[1] + (float)$starttime[0];
$endtime = (float)$endtime[1] + (float)$endtime[0];
return number_format($endtime - $starttime, $decimals);
}
/**
* Stop and show the timer.
*
* Combines the stop and show timer functions.
*
* @param integer $decimals The number of decimal places to show in the timer. Default is 3.
* @return float The time taken between instantiating the class and stopping the timer.
*/
function timer_stop_show($decimals=3)
{
$this->timer_stop();
return $this->timer_show($decimals);
}
}
?> | |
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