Thinkphp3.2가 여러 파일을 업로드하고 하나의 파일만 업로드하는 문제를 단순히 해결한 문제에 대한 분석

<form action="{:U(&#39;index/upload&#39;)}" method="post" enctype="multipart/form-data">
 文件上传：<input type="file" name = "test[]">
 文件上传：<input type="file" name = "test[]">
 文件上传：<input type="file" name = "test[]">
 文件上传：<input type="file" name = "test[]">
 文件上传：<input type="file" name = "test[]">
 文件上传：<input type="file" name = "test[]">
 文件上传：<input type="file" name = "test[]">
 文件上传：<input type="file" name = "test[]">
 文件上传：<input type="file" name = "test[]">
 文件上传：<input type="file" name = "test[]">
 文件上传：<input type="file" name = "test[]">
 文件上传：<input type="file" name = "test[]">
 <input type="submit" value = "提交">
</form>

<?php
namespace Home\Controller;
use Think\Controller;
class IndexController extends Controller {
 public function index(){
  $this->display();
 }
 public function upload(){
  if(IS_POST){
   $config = array(
    &#39;maxSize&#39; => 3145728,
    &#39;rootPath&#39; => &#39;./Uploads/&#39;,
    &#39;savePath&#39; => &#39;&#39;,
    &#39;saveName&#39; => array(&#39;uniqid&#39;, mt_rand(1,999999).&#39;_&#39;.md5(uniqid())),
    &#39;exts&#39;  => array(&#39;jpg&#39;, &#39;gif&#39;, &#39;png&#39;, &#39;jpeg&#39;),
    &#39;autoSub&#39; => true,
    &#39;subName&#39; => array(&#39;date&#39;,&#39;Ymd&#39;),
   );
   $upload = new \Think\Upload($config);// 实例化上传类
   $info = $upload->upload();
   if(!$info) {
    $this->error($upload->getError());
   }else{
    foreach($info as $file){
     echo $file[&#39;savepath&#39;].$file[&#39;savename&#39;];
    }
   }
  }else{
   $this->display();
  }
 }
}

$config = array(
    'maxSize' => 3145728,
    'rootPath' => './Uploads/',
    'exts'  => array('jpg', 'gif', 'png', 'jpeg'),
    'autoSub' => true,
    'subName' => array('date','Ymd'),
    'saveRule' => '',
   );

$config = array(
    'maxSize' => 3145728,
    'rootPath' => './Uploads/',
    'saveName' => array('uniqid', mt_rand(1,999999).'_'.md5(uniqid())),
    'exts'  => array('jpg', 'gif', 'png', 'jpeg'),
    'autoSub' => true,
    'subName' => array('date','Ymd'),
   );