time.php:

     defaultDigit = $_digit;    }    /*      *      * @param $digit 毫秒的位数，0表示不使用毫秒     */      final function get_time()      {        $counter = $this->defaultDigit;        if(!$counter) return time();        if ($counter != 3) {            $tmp_time = 10;            while(--$counter) {                $tmp_time *= 10;            }        } else {            $tmp_time = 1000;        }        $time = explode (" ", microtime());        $time = $time[1] . ($time[0] * $tmp_time);           $time = explode ( ".", $time );           $time = $time[0];        return $time;      }    /**     * 计算时间位数     * @param  [type] $time [description]     * @return [type]       [description]     */    final function calcDigit($time)    {        return strlen($time);    }    /**     * 根据指定位数，判断是否可以使用     * @param  [type]  $digit [description]     * @return boolean        [description]     */    final function isOutput($digit)    {        if(($this->defaultDigit + 10) == $digit) return true;        else return false;    }    /**     * 获取时间戳     * @param  [type] $count [description]     * @return [type]        [description]     */    abstract function getMillisecond();}

 

mytime.php:

     get_time();        if ($this->isOutput($this->calcDigit($time))) {            return $time;        } else {            return $this->getMillisecond();        }    }}$mytime = new MyTime();echo $mytime->getMillisecond();