PHP视频上传发生错误

$file_name = $_FILES['video']['tmp_name'];

        echo $file_name;

When I upload the image file, it response the image's tmp_name in php server.

But I upload the video file, it doesn't response the video's tmp_name. and I check the PHP server, in tmp folder, I can't check video's file.

Is there any condition when I upload the video file?

If you know about that, please help me.

I choose 2mb video file. I think this file doesn't check limit.

You can check the upload_max_filesize or post_max_size property on PHP server configuration(php.ini), since the video files' sizes are usually large than the limit. You can find relevant information below.

http://php.net/manual/en/ini.core.php#ini.upload-max-filesize

http://php.net/manual/en/features.file-upload.post-method.php