Public bug reported:

# lsb_release -rd
Description:    Ubuntu 16.04.1 LTS
Release:        16.04

-------------------

# apt-cache policy php7.0
php7.0:
  Installed: (none)
  Candidate: 7.0.8-0ubuntu0.16.04.2
  Version table:
     7.0.8-0ubuntu0.16.04.2 500
        500 http://ru.archive.ubuntu.com/ubuntu xenial-updates/main amd64 
Packages
        500 http://ru.archive.ubuntu.com/ubuntu xenial-updates/main i386 
Packages
        500 http://security.ubuntu.com/ubuntu xenial-security/main amd64 
Packages
        500 http://security.ubuntu.com/ubuntu xenial-security/main i386 Packages
     7.0.4-7ubuntu2 500
        500 http://ru.archive.ubuntu.com/ubuntu xenial/main amd64 Packages
        500 http://ru.archive.ubuntu.com/ubuntu xenial/main i386 Packages

-------------------

# kill -l
 1) SIGHUP       2) SIGINT       3) SIGQUIT      4) SIGILL       5) SIGTRAP
 6) SIGABRT      7) SIGBUS       8) SIGFPE       9) SIGKILL     10) SIGUSR1
11) SIGSEGV     12) SIGUSR2     13) SIGPIPE     14) SIGALRM     15) SIGTERM
16) SIGSTKFLT   17) SIGCHLD     18) SIGCONT     19) SIGSTOP     20) SIGTSTP
21) SIGTTIN     22) SIGTTOU     23) SIGURG      24) SIGXCPU     25) SIGXFSZ
26) SIGVTALRM   27) SIGPROF     28) SIGWINCH    29) SIGIO       30) SIGPWR
31) SIGSYS      34) SIGRTMIN    35) SIGRTMIN+1  36) SIGRTMIN+2  37) SIGRTMIN+3
38) SIGRTMIN+4  39) SIGRTMIN+5  40) SIGRTMIN+6  41) SIGRTMIN+7  42) SIGRTMIN+8
43) SIGRTMIN+9  44) SIGRTMIN+10 45) SIGRTMIN+11 46) SIGRTMIN+12 47) SIGRTMIN+13
48) SIGRTMIN+14 49) SIGRTMIN+15 50) SIGRTMAX-14 51) SIGRTMAX-13 52) SIGRTMAX-12
53) SIGRTMAX-11 54) SIGRTMAX-10 55) SIGRTMAX-9  56) SIGRTMAX-8  57) SIGRTMAX-7
58) SIGRTMAX-6  59) SIGRTMAX-5  60) SIGRTMAX-4  61) SIGRTMAX-3  62) SIGRTMAX-2
63) SIGRTMAX-1  64) SIGRTMAX    

-------------------

# php -v
PHP 7.0.8-0ubuntu0.16.04.2 (cli) ( NTS )
Copyright (c) 1997-2016 The PHP Group
Zend Engine v3.0.0, Copyright (c) 1998-2016 Zend Technologies
    with Zend OPcache v7.0.8-0ubuntu0.16.04.2, Copyright (c) 1999-2016, by Zend 
Technologies

-------------------

# php -i | grep pcntl
pcntl
pcntl support => enabled

-------------------

get_defined_constants () function shows the following signals are
defined in PHP:

SIGHUP: 1
SIGQUIT: 3
SIGTRAP: 5
SIGABRT: 6
SIGBUS: 7
SIGFPE: 8
SIGKILL: 9
SIGUSR1: 10
SIGUSR2: 12
SIGPIPE: 13
SIGALRM: 14
SIGTERM: 15
SIGCLD: 17
SIGCHLD: 17
SIGCONT: 18
SIGTSTP: 20
SIGTTIN: 21
SIGTTOU: 22
SIGURG: 23
SIGXCPU: 24
SIGXFSZ: 25
SIGVTALRM: 26
SIGPROF: 27
SIGWINCH: 28
SIGPOLL: 29
SIGPWR: 30
SIGBABY: 31
 
-------------------

This code works on Ubuntu 14.04 with PHP 7.0.7, but not work on Ubuntu
16.04 with PHP 7.0.8:

<?PHP
declare(ticks = 1);

function sig_handler($signal)
{
        exit("received signal: ".$signal);
}

echo getmypid().PHP_EOL;

if (!pcntl_signal(SIGTERM, "sig_handler")) exit('handler is not
registered');

while (true) {
        //some code
}
?>

Function sig_handler() is not called if launch this script in CLI and
try to send a signal through the "kill" ("kill PID", "kill -15 PID",
"kill -SIGTERM PID"). I tried to register a handler to other signals
(SIGUSR1, SIGPWR, etc.) and send them, but the behavior has not changed.

** Affects: php7.0 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: pcntl php7.0.8

-- 
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https://bugs.launchpad.net/bugs/1610964

Title:
  pcntl_signal() not work in PHP 7.0.8-0ubuntu0.16.04.2

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