组装近三年按季度查询的时间节点

$now = time();

$year[] = (date('Y',time()))-2;
$year[] = (date('Y',time()))-1;
$year[] = (date('Y',time()));

$mon = array(1,4,7,10);
//组装近三年每个季度的节点
foreach ($year as $v){
   foreach ($mon as $j){
       $node_str[] = "'".$v."-".$j."'";
   }
}
for ($k=1;$k<count($node_str);$k++){

//根据时间节点循环查询
   $data[] = $db->select("select * from table1  where time between ".$node_str[$k-1]." and ".$node_str[$k]);
}