Date & Time
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<?
/**
* Simple stopwatch, useful for timing PHP code execution, includes split times
*
* Example use:
* $stopwatch = new stopwatch;
* ...
* // Pass whatever comment you like
* $stopwatch->lap("in my_func() at start");
* ...
* $stopwatch->lap("in my_func() in middle");
* ...
* $stopwatch->lap("in my_func() at end");
*
* Example output:
* in my_func(), at start split time 0.00 seconds
* in my_func(), at start elapsed time 0.00 seconds
*
* in my_func(), in middle complete split time 6.49 seconds
* in my_func(), in middle complete elapsed time 6.49 seconds
*
* in my_func() at end split time 2.58 seconds
* in my_func() at end elapsed time 9.07 seconds
*
* @author Hugh Prior stopwatch@priorwebsites.com
*/
class stopwatch
{
//properties
var $start_time;
var $stop_time;
var $lap_times;
/**
* Initialise stopwatch by starting it going
*/
function stopwatch()
{
$this->start();
$this->lap_times = array();
}
/**
/* get_microtime function taken from Everett Michaud on Zend.com
*/
function get_microtime()
{
list($secs, $micros) = split(" ", microtime());
$mt = $secs + $micros;
return $mt;
}
/**
* Set start time
*/
function start()
{
$this->start_time = $this->get_microtime();
}
/**
* Set end time
*/
function stop()
{
$this->stop_time = $this->get_microtime();
}
/**
* Get the elapsed time
*/
function get_elapsed()
{
$time_now = $this->get_microtime();
$elapsed = $time_now - $this->start_time;
return $elapsed;
}
/**
* Get the last split (lap) time
*/
function get_last_split()
{
$time_now = $this->get_microtime();
$laps_done = sizeof($this->lap_times);
if ($laps_done == 0) {
$split = $time_now - $this->start_time;
}
else {
$split_no = sizeof($this->lap_times) - 1;
$split = $time_now - $this->lap_times[$split_no];
}
$this->lap_times[] = $time_now;
return $split;
}
/**
* Look at the times (i.e. print it!)
*/
function lap($comment="")
{
$split = $this->get_last_split();
$split = number_format($split, 2);
$elapsed = $this->get_elapsed();
$elapsed = number_format($elapsed, 2);
print "$comment split time $split seconds<br>";
print "$comment elapsed time $elapsed seconds<br>";
print "<br>";
}
}
?>
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