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How to prevent a php file when it is running from being executed by another user?
an example:
User X opens the exe.php file the processing time of it will be in 25 seconds at this time the user Y decides to open the exe.php file but it cannot be executed because the user X is still processing the file.
There is a solution to this?
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You can try to create a temporary file, if it is Linux it could be something like /tmp/exe.php.lock, and delete when processing ends. But there is a great risk that the file will not be removed if PHP fails halfway.
Another output is to create a socket on a well-defined, fixed port. If bind() fails it is because another instance already created the socket on that port and has not yet left. You can refer to the example in http://php.net/manual/en/sockets.examples.php to see how to create the socket; just go to bind(), and don’t forget the socket_close() at the end.
and close the socket when the processing is over. The chance of the socket being open if PHP fails halfway is less, or perhaps non-existent.
Your answer is better than the original closing post (including I mentioned in the original "orphan" lock problem, which you wisely solved with the bind()). Too bad Sopt’s people don’t merge postage.
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There are even a number of different ways to do this, like the answer from fellow @epx (who already took my +1) but the impression is that you have one XY problem, that is, asking the way you think is the solution, instead of exposing the real problem.
– Bacco