$sql="select *from think_kaoqin WHERE(1=1)"; if(!empty($uid)) { $sql .=" and uid= ".$uid; } if(!empty($time1) && empty($time2)) { $sql .=" and riqi >= '".$time1."'"; } if (!empty($time2) &&empty($time1)) { <em style="color:transparent">本文来源[email protected]搞@^&代*@码)网9</em><strong>搞代gaodaima码</strong> $sql .=" and riqi = '".$time1."' and riqi info=M('kaoqin')->query($sql);