Manual do PHP
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# posix_getsid

(PHP 3>= 3.0.10, PHP 4 , PHP 5)

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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