javascript - Unable to obtain file information when uploading in php

I use ajax to upload files to Php. All files within the operating range of Php file size can be obtained. However, if I upload a 300M file, nothing can be obtained from the PHP side. The print return information is as follows:
array( 0) {}
No Properties

How can we obtain file information or judge the file size without modifying the upload size of various configuration files such as PHP and browsers? Because I can’t get the files here, let alone determine the file size, please give me some advice!

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I use ajax to upload files to Php. All files within the operating range of Php file size can be obtained. However, if I upload a 300M file, nothing can be obtained from the PHP side. The print return information is as follows:
array( 0) {}
No Properties

How can we obtain file information or judge the file size without modifying the upload size of various configuration files such as PHP and browsers? Because I can’t get the files here, let alone determine the file size, please give me some advice!

It seems that you can use js to check the file size

<code>var file = document.getElementById(InputElementID);
var sieze = dom.files[0].size;</code>

Have the upload file size limits of webserver and php.ini changed?

It should be that php has been running for enough time, but the file was not uploaded successfully, so there is no file information at all

I passed a hidden value to it. Once it is obtained, it means that the data in the Post is in compliance with the size. Otherwise, intercepting it is theoretically possible but not the best way. You are welcome to answer and add. The problem here is that some POST software can POST directly. File streaming data used to be very embarrassing