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# posix_getsid

posix_getsid -- Get the current sid of the process

## Description

`int posix_getsid`(int pid);

Return the sid of the process `pid`. If `pid` is 0, the sid of the current process is returned.

This is not a POSIX function, but is common on System V systems. If your system does not support this function at system level, this PHP function will always return FALSE.

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