Thinkphp3.2.3大于多少小于多少，或者是多少的联合语句

array (size=3)
  0 => 
    array (size=2)
      0 => string 'lt' (length=2)
      1 => int 1486468351
  1 => 
    array (size=2)
      0 => string 'between' (length=7)
      1 => 
        array (size=2)
          0 => int 1486468351
          1 => int 1486554750
  2 => string 'or' (length=2)

$where['b.a_time'] = array(array('lt',$startime), array('between',array($startime,$endtime)),'or') ;