form action="upload.php" method="post" enctype="multipart/form-data">
 p>Pictures:br />
  input type="file" name="pictures[]" />br />
  input type="file" name="pictures[]" />br />
  input type="file" name="pictures[]" />br />
  input type="submit" name="upload" value="添加" />
 /p>
/form>

?php
 $uploadfile;
 if($_POST['upload']=='添加'){
 $dest_folder  = "picture/";  //上传图片保存的路径 图片放在跟你upload.php同级的picture文件夹里
 $arr=array(); //定义一个数组存放上传图片的名称方便你以后会用的，如果不用那就不写
 $count=0;
 if(!file_exists($dest_folder)){
  mkdir($dest_folder);
 }
 foreach ($_FILES["pictures"]["error"] as $key => $error) {
  if ($error == UPLOAD_ERR_OK) {
  $tmp_name = $_FILES["pictures"]["tmp_name"][$key];
  $name  = $_FILES["pictures"]["name"][$key];
  $uploadfile = $dest_folder.$name;
  move_uploaded_file($tmp_name, $uploadfile);
  $arr[$count]=$uploadfile;
  echo $arr[$count]."br />";
  $count++;
  }
 }
 echo "hr/>";var_dump($arr);die;
 }
?>