Utilities
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----------- ProTimer.inc -------------
<?
if(defined('__PROTIMER.INC'))
return;
else
define('__PROTIMER.INC', 1);
class ProTimer
{
var $start;
function ProTimer()
{
$this->start = $this->GetMicrotime();
}
function GetMicrotime()
{
$tmp_ary = explode(' ', microtime());
return((float)$tmp_ary[1] + (float)$tmp_ary[0]);
}
// this function returns the elapsed time and resets the timer
// therefore, the elapsed time is measured since instantiation or
// the last time ReadTimer was called
function ReadTimer($decimals = 4)
{
$end = $this->GetMicrotime();
$start = $this->start;
$decimals = intval($decimals);
if ($decimals > 8)
$decimals = 8;
if ($decimals < 0)
$decimals = 0;
$this->start = $this->GetMicrotime();
return number_format($end - $start, $decimals);
}
}
?>
--------- ProTimerFooter.inc --------------
<?
// this footer assumes that you have stored your various elapsed times
// in an associative array name $ProTimes
if(!empty($ProTimes))
{
print '<table><th>Code Section</th><th>Elapsed Time</th>';
foreach($ProTimes as $label => $time)
print "<tr><td>$label</td><td>$time s</td></tr>n";
print '</table>';
}
?>
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Usage Example
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/* Usage Example */
include 'ProTimer.inc';
// start the overall timer
$o_timer = new ProTimer();
// start the section timer
$s_timer = new ProTimer();
for($i = 0; $i <= 9999; $i++)
$my_ary[$i] = $i * 2;
// get the elapsed time, reset $s_timer
$ProTimes['for-10000'] = $s_timer->ReadTimer();
foreach($my_ary as $index => $value)
$value /= 2;
// get the elapsed time, reset $s_timer
$ProTimes['foreach'] = $s_timer->ReadTimer();
// get the total elapsed time, reset $o_timer
$ProTimes['total'] = $o_timer->ReadTimer();
include 'ProTimerFooter.inc';
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