javascript - Can you read a file concurrently in PHP using file_get_contents()?

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Let's say there are hundreds, or even thousands, of users on your website at the same time.

In the PHP file, there is a file_get_contents() which reads a JSON file and displays that to those users.

I have heard that for some people, it may return a file does not exist if another user is reading the file.

Is this possible through file_get_contents()? Or is it extremely unlikely