What does the PHP manual mean by "Process IDs are not unique"? How do I get the actual unique "process id"?
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Source: https://www.php.net/manual/en/function.getmypid.php
Warning Process IDs are not unique, thus they are a weak entropy source. We recommend against relying on pids in security-dependent contexts.
How can a "process id" not be unique? What am I missing? Andgetmyuid() is equally nonsensical in that it doesn't give any useful process id back, but only:
Gets PHP script owner's UID
In short: How do I get some kind of unique id for the current (CLI) PHP process from where this is run?
Answer
Solution:
PIDs are not unique. If a process dies the OS may reuse the ID for a new one. This is not a PHP thing.
If you want to generate unique values useuniqid()
https://www.php.net/manual/en/function.uniqid.php
If you're on linux you could also useuuidgenin backtics (``):
var_dump(`uuidgen`);
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Additional Information:
Link To Answer People are also looking for solutions of the problem: please make sure the php redis extension is installed and enabled.
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