1    $option = '<select class="sla_list">';
 2     
 3    // 取出所有策略
 4    $sla_query = $this->db->select('sla_id, name')->get('sla');
 5         $sla_res = $sla_query->result_array();
 6         if (!empty($sla_res)) {
 7             $option .= '<option value="0">未保护</option>';
 8             foreach ($sla_res as $k1 => $v1) {
 9                 $option .= '<option value="' . $v1['sla_id'] . '">' . $v1['name'] . '</option>';
10             }
11             $option .= '</select>';
12 
13         } else {
14             $option .= '<option value="0">未保护</option></select>';
15         }
16 
17 
18    // 选中默认的保护策略
19    $vm_query = $this->db->select('sla_id')->where('vm_id', $vm_id)->get('task_vm', 1);
20    $vm_res = $vm_query->row_array();
21    if (is_null($vm_res['sla_id'])) $res['sla_id'] = 0;
22    $selected = 'value="' . $vm_res['sla_id'] . '"';
23    $new_str_arr = explode($selected, $option);
24    $new_option = implode(" {$selected} selected", $new_str_arr);