เก็บค่าจาก checkbox ในรูปแบบ array ขอคำแนะนำหน่อยคับเจอปัญหาเข้าแว้ว

elseif ($record_Q["questionsurvey_type"] == "CHECKBOX" || $record_Q["questionsurvey_type"] == "CHECKBOX2")
					{
							echo"<br>".$SQL_C = "SELECT * FROM ".PREFIX."choicesurvey   WHERE questionsurvey_id = '".$record_Q["questionsurvey_id"]."' ";
							$result_C = $dbconn->execute($SQL_C);
								while($record_C=$dbconn->fetch($result_C))
								 {
								 	$len = strlen("no".$record_C["choicesurvey_id"]);
									reset($HTTP_POST_VARS);
									while(list($key, $value) = each($HTTP_POST_VARS))
									{
										if(substr($key,0,$len+1) == "no".$record_C["choicesurvey_id"]."_")
										{ echo"<br>".$a_value[count($a_value)] = $HTTP_POST_VARS[$key];}
									}
								}echo $value = implode(", ", $a_value);
								
							}
					else
					{$value = $HTTP_POST_VARS["no".$questionsurvey_id];}

//var_dump($value);
			$sql="INSERT INTO ".PREFIX."survey_score SET survey_id='".$survey_id."' ,  dosurvey_id='".$dosurvey_id."' , questionsurvey_id='". $record_Q["questionsurvey_id"]."' , scoresurvey_value='".$value."'";
				$result=$dbconn->execute($sql);