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<?php
/**
* Piwik - Open source web analytics
*
* @link http://piwik.org
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*
* @category Piwik
* @package Piwik
*/
namespace Piwik;
/**
*
* @package Piwik
*/
class Timer
{
private $timerStart;
private $memoryStart;
/**
* @return \Piwik\Timer
*/
public function __construct()
{
$this->init();
}
/**
* @return void
*/
public function init()
{
$this->timerStart = $this->getMicrotime();
$this->memoryStart = $this->getMemoryUsage();
}
/**
* @param int $decimals
* @return string
*/
public function getTime($decimals = 3)
{
return number_format($this->getMicrotime() - $this->timerStart, $decimals, '.', '');
}
/**
* @param int $decimals
* @return string
*/
public function getTimeMs($decimals = 3)
{
return number_format(1000 * ($this->getMicrotime() - $this->timerStart), $decimals, '.', '');
}
/**
* @return string
*/
public function getMemoryLeak()
{
return "Memory delta: " . MetricsFormatter::getPrettySizeFromBytes($this->getMemoryUsage() - $this->memoryStart);
}
/**
* @return string
*/
public function __toString()
{
return "Time elapsed: " . $this->getTime() . "s";
}
/**
* @return float
*/
private function getMicrotime()
{
list($micro_seconds, $seconds) = explode(" ", microtime());
return ((float)$micro_seconds + (float)$seconds);
}
/**
* Returns current memory usage, if available
*
* @return int
*/
private function getMemoryUsage()
{
if (function_exists('memory_get_usage')) {
return memory_get_usage();
}
return 0;
}
}
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