(PHP 4, PHP 5, PHP 7, PHP 8)
posix_kill — Send a signal to a process
$process_id
$signal
Send the signal signal to the process with the process identifier process_id.
signal
process_id
The process identifier.
One of the PCNTL signals constants.
成功时返回 true, 或者在失败时返回 false。
true
false