PHP3.2 implémente plusieurs téléchargements de fichiers

public function upload(){
	    $upload = new \Think\Upload();// 实例化上传类
	    $upload->maxSize   =     3145728 ;// 设置附件上传大小
	    $upload->exts      =     array('jpg', 'gif', 'png', 'jpeg');// 设置附件上传类型
	    $upload->rootPath  =      './Uploads/'; // 设置附件上传根目录
	    $upload->savePath  =      'slider/'; // 设置附件上传（子）目录
	    // 上传单个文件 
	    $info   =   $upload->uploadOne($_FILES['files']);
	    if(!$info) {// 上传错误提示错误信息
	        $this->error($upload->getError());
	    }else{// 上传成功 获取上传文件信息
	        $url= $info['savepath'].$info['savename'];
	    }
	    return $url;
}

public function upload(){
	    $upload = new \Think\Upload();// 实例化上传类
	    $upload->maxSize   =     3145728 ;// 设置附件上传大小
	    $upload->exts      =     array('jpg', 'gif', 'png', 'jpeg');// 设置附件上传类型
	    $upload->rootPath  =      './Uploads/'; // 设置附件上传根目录
	    $upload->savePath  =      'last/'; // 设置附件上传（子）目录
	    // 上传多个文件 
	    $info   =   $upload->upload();
		if(!$info) {// 上传错误提示错误信息
		    $this->error($upload->getError());
		}else{// 上传成功 获取上传文件信息
		    foreach($info as $file){
		        $url .= $file['savepath'].$file['savename'].',';
		    }
		}
	    return $url;
}

 <input type="file" name="files[]" multiple="">

<input type=&#39;file&#39;  name=&#39;photo&#39;>

<input type=&#39;file&#39;  name=&#39;photo1&#39;>
<input type=&#39;file&#39;  name=&#39;photo2&#39;>
<input type=&#39;file&#39;  name=&#39;photo3&#39;>

<input type=&#39;file&#39;  name=&#39;photo[]&#39;>
<input type=&#39;file&#39;  name=&#39;photo[]&#39;>
<input type=&#39;file&#39;  name=&#39;photo[]&#39;>

//获取商品图片路径和详情图片路径
        $str = $this->upload();
        $count1 = count($_FILES['files1']['name']);//获取商品图片上传个数
        $arr = explode(',',$str);
        $slider = '';
        $detail = '';
        foreach ($arr as $k=>$v){
            if($k+1<$count1){
                $slider .= $v.&#39;,&#39;;
            }else{
                $detail .= $v.&#39;,&#39;;
            }
        }
        $slider = rtrim($slider,&#39;,&#39;);
        $detail = rtrim($detail,&#39;,&#39;);