PHP 4, PHP 5, PHP 7, PHP 8
posix_getsid - Get the current sid of the process
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posix_getsid( int$process_id ): int|false

Return the session id of the process process_id. The session id of a process is the process group id of the session leader.



The process identifier. If set to 0, the current process is assumed. If an invalid process_id is specified, then false is returned and an error is set which can be checked with posix_get_last_error.

Return Values

Returns the identifier, as an int, or false on failure.

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