public function startTimer($timer, $startTime = null)
	{
		$this->timers[$timer] = new Timer($startTime);

		return $this;
	}
public function startTimer($timer, $startTime = null)
	{
		$this->timers[$timer] = new Timer($startTime);

		return $this;
	}
public function startTimer ( $ timer , $ startTime = null ) { $ this -> timers [ $ timer ] = new Timer ( $ startTime ) ; return $ this ; }
Start a timer.

@param  string  $timer
@param  mixed  $startTime
@return \Profiler\Profiler
Start a timer .