/**
* Returns the time when the application started, in seconds
* elapsed since 01.01.1970 plus microseconds if available.
*
* @return float
* @static
*/
public static function getStartTime()
{
if (!isset(self::$startTime)) {
if (function_exists('microtime')) {
// microtime as float
self::$startTime = microtime(true);
} else {
self::$startTime = floatval(time());
}
}
return self::$startTime;
}
