php批量保存到数据库

<?php
include("sql.php");
for($i=0;$i<count($_FILES["img"]["name"]);$i++){
switch($_FILES["img"]["type"][$i]){

case 'image/pjpeg' : $ok=1;
break;
case 'image/jpeg' : $ok=1;

break;
case 'image/gif' : $ok=1;
break;
case 'imgage/png' : $ok=1;

break;

}
if($ok){
$up="up/";
if(move_uploaded_file($_FILES["img"]["tmp_name"][$i],$up.$_FILES["img"]["name"][$i]))
{echo "上传成功";}
}
}
$sql="insert into fb (id,img,img2,img3,img4,time) values ('','$i1','$i2','$i3','$i4',now())";
mysql_query($sql);
?>
<form action="100.php" method="post" enctype="multipart/form-data">
<input type="file" name="img[]" id="1" /><br />
<input type="file" name="img[]" id="2" /><br />
<input type="file" name="img[]" id="3" /><br />
<input type="file" name="img[]" id="4" /><br />
<input type="submit" value="上传" />
</form>
如何在一个ID下让img的几个数据框里分别保存$i的1,2,3....的路径，求高手指点！

答案：<?php
 include("sql.php");
 for($i=0;$i<count($_FILES["img"]["name"]);$i++){
 switch($_FILES["img"]["type"][$i]){
  
case 'image/pjpeg' : $ok=1;
  break;
  case 'image/jpeg' : $ok=1;
  
break;
  case 'image/gif' : $ok=1;
  break;
  case 'imgage/png' : $ok=1;
  
break;
  
} 
if($ok){
 $up="up/";
 $img[$i]=$up.$_FILES["img"]["name"][$i];//把地址存放到一个数组中
 if(move_uploaded_file($_FILES["img"]["tmp_name"][$i],$up.$_FILES["img"]["name"][$i]))
 {echo "上传成功";}
 }
 }
 /*for($k=1;$k<=count($img);$k++){
   $i.$k=$img[$k-1];
 }
 $sql="insert into fb (id,img,img2,img3,img4,time) values ('','$i1','$i2','$i3','$i4',now())";*/
 //注视部位是按你要求给$i1到4赋值，你这问题很古怪
 $sql="insert into fb (id,img,img2,img3,img4,time) values ('','$img[0]','$img[1]','$img[2]','$img[3]',now())";
 mysql_query($sql);
 ?>