src/Drupal/Component/Utility/Timer.php
static public function start($name) {
    static::$timers[$name]['start'] = microtime(TRUE);
    static::$timers[$name]['count'] = isset(static::$timers[$name]['count']) ? ++static::$timers[$name]['count'] : 1;
  }
static public function start($name) {
    static::$timers[$name]['start'] = microtime(TRUE);
    static::$timers[$name]['count'] = isset(static::$timers[$name]['count']) ? ++static::$timers[$name]['count'] : 1;
  }
static public function start ( $ name ) { static :: $ timers [ $ name ] [ 'start' ] = microtime ( TRUE ) ; static :: $ timers [ $ name ] [ 'count' ] = isset ( static :: $ timers [ $ name ] [ 'count' ] ) ? ++ static :: $ timers [ $ name ] [ 'count' ] : 1 ; }
Starts the timer with the specified name.

If you start and stop the same timer multiple times, the measured intervals
will be accumulated.

@param $name
The name of the timer.
Starts the timer with the specified name .