(PHP 5 >= 5.3.0, PHP 7)
pcntl_sigwaitinfo — Waits for signals
$set
[, array &$siginfo
] )
The pcntl_sigwaitinfo() function suspends execution of the
calling script until one of the signals given in set
are delivered. If one of the signal is already pending (e.g. blocked by
pcntl_sigprocmask()),
pcntl_sigwaitinfo() will return immediately.
setArray of signals to wait for.
siginfo
The siginfo parameter is set to an array containing
informations about the signal.
The following elements are set for all signals:
The following elements may be set for the SIGCHLD signal:
The following elements may be set for the SIGILL,
SIGFPE, SIGSEGV and
SIGBUS signals:
The following element may be set for the SIGPOLL
signal:
On success, pcntl_sigwaitinfo() returns a signal number.
Example #1 pcntl_sigwaitinfo() example
<?php
echo "Blocking SIGHUP signal\n";
pcntl_sigprocmask(SIG_BLOCK, array(SIGHUP));
echo "Sending SIGHUP to self\n";
posix_kill(posix_getpid(), SIGHUP);
echo "Waiting for signals\n";
$info = array();
pcntl_sigwaitinfo(array(SIGHUP), $info);
?>