codeigniter使用技巧批量插入数据实例方法分享

$sub_form = array();  $loop = 0;  $ins_loop = 0;  $sum = count($form_datas);  $this->logger->info('insert data total:'.$sum);  //使用事物批量导入有助于提高插入效率  $callStartTime = microtime(true);  $this->db->trans_start();  foreach ( $form_datas as $item ) {         $loop ++;         $sub_form[] = $item;         if(($loop % 200) == 0 || $loop == $sum){          $this->logger->info('insert data num:'.$loop);    $res = $this->kb_object_instance_mdl->insert_batch($sub_form,$obj_id);    $ins_loop ++;    unset($sub_form);    if(($ins_loop % 5) == 0){     $this->logger->info('insert data trans_complete ins_loop:'.$ins_loop);           $this->db->trans_complete();           if($loop != $sum){            $this->db->trans_start();           }    }         }  }  //$this->db->trans_complete();  $callEndTime = microtime(true);  $callTime = $callEndTime - $callStartTime;  $this->logger->info('insert data use time:'.sprintf('%.4f',$callTime));     if($this->db->trans_status() === TRUE){      $this->_show_msg('1',array('data'=>'import ok'));     }else{      $this->_show_error('saveOrUpdate error');     }