posix_getsid

Get the current sid of the process

&reftitle.description; `int` `posix_getsid` `int` `pid`

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

&reftitle.parameters;

`pid`

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

&reftitle.returnvalues;

Returns the identifier, as an `integer`.

&reftitle.examples;

### Example use of `posix_getsid`

    <?php
    $pid = posix_getpid();
    echo posix_getsid($pid); //8805
    ?>

&reftitle.seealso;

- `posix_getpgid`
- `posix_setsid`
- POSIX man page GETSID(2)