src/Timer.php
public function tic($flag = self::RESET_COUNTER)
    {
        $this->start = microtime(true);
        if ($flag) {
            $this->count = 0;
        }
    }
public function tic($flag = self::RESET_COUNTER)
    {
        $this->start = microtime(true);
        if ($flag) {
            $this->count = 0;
        }
    }
Starts timer.
@param  int $flag self::RESET_COUNTER|self::KEEP_COUNTER
@return void