如何将当前服务器时间与SQL数据库时间戳进行比较？

Question

I wanted to compare current time with predefined timestamp range (start_time and end_time) from database. But the query returns nothing. Will be grateful for any kind of help.

    public function setCurrentGw()  //Isn't allowed to set externally
    {
        $this->table='gameweek';
        $current_time = new time();

        $query="SELECT `gw`,`start_time`,`end_time` FROM `$this->table` WHERE `start_time`<=$current_time AND $current_time<=`end_time`";

        if($q=mysql_query($query))
        {
            $temp=mysql_fetch_assoc($q);
            $this->current_gw=$temp['gw'];
            echo $temp['start_time'];
            echo 'Current#'.$this->current_gw.'<br/>';
        }
        else
        {
            echo 'Technical Failure! Try Again';
        }
    }

Answer 1

OP声明NOW()有效。