posix_getsid
(PHP 4, PHP 5, PHP 7, PHP 8)
posix_getsid — Get the current sid of the process
说明
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.
参数
-
process_id -
The process identifier. If set to 0, the current process is assumed. If an invalid
process_idis specified, thenfalseis returned and an error is set which can be checked with posix_get_last_error().
返回值
Returns the identifier, as an int, 或者在失败时返回 false.
范例
示例 #1 Example use of posix_getsid()
<?php
$pid = posix_getpid();
echo posix_getsid($pid); //8805
?>
参见
- posix_getpgid() - Get process group id for job control
- posix_setsid() - Make the current process a session leader
- POSIX man page GETSID(2)
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