How to solve the problem of php unlink failure

Solution to php unlink failure: 1. Open the corresponding PHP sample file; 2. Use "unset($info);" to unblock the process of the image; 3. Re-execute the "@unlink" operation. , syntax "@unlink($filePath);".

#The operating environment of this article: Windows 7 system, PHP8, Dell G3 computer.

Recently when I was doing the avatar change function on my website, it involved PHP file upload.

The solution I adopt is that the user first uploads to the server, and then the server uploads it to Alibaba Cloud's OSS. In the middle, there will be a process of temporarily storing the image to the server. So I discovered the problem of deletion failure when using PHP's @unlink (delete specified file) method.

At first I thought my path name was written wrong, but later I confirmed that this parameter was correct. The reason for the deletion failure is that the picture is still occupied by the process, so if we want to successfully perform the @unlink operation, we'd better manually release the file object to avoid deletion failure due to being occupied by other threads or processes. The code snippet is as follows:

// [API接口-用户更新头像]
public function setAvatar()
{
// 获取表单上传文件
$file = $this->request->file('avatar');
if ($file) {
// 移动到框架应用根目录/public/uploads/ 目录下
$info = $file->rule('date')->move(ROOT_PATH . 'public' . DS . 'uploads');
if ($info) {//文件上传到服务器成功->接下来上传到OSS
        $filePath = ROOT_PATH . 'public' . DS . 'uploads/' . $info->getSaveName();
       
        $oss = new Oss();
        $result = $oss->putObject($filePath); 
                  
if ($result) { //上传到OSS成功                              
unset($info);//解除图片的进程占用
@unlink($filePath);
return success(['avatar' => $result['fileSrc']], '头像更新成功');
}
        }
}
}

It has to be said that self-study is very difficult, and the reason lies not in the outside world, but in the inside. This time, in order to pursue what I wanted, I cut off my retreat and quit my stable job. I hope these sacrifices will not be worthless.

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