<?php
declare(ticks = 1);
function zp_handler($signal) {
$id = pcntl_waitpid(-1, $status, WNOHANG);
if (pcntl_wifexited($status))
{
printf("Removed Chlid id: %d \n",$id);
printf("Chlid status: %d \n",pcntl_wexitstatus($status));
}
}
pcntl_signal(SIGCHLD, "zp_handler");
$pid = pcntl_fork();
if ($pid == 0)
{
print "#1 Hi, I'm child process".PHP_EOL;
sleep(3);
return 10;
}
else
{
print "#1parent process id:".$pid.PHP_EOL;
$pid = pcntl_fork();
if ($pid == 0)
{ print "#2 Hi, I'm child process".PHP_EOL;
sleep(10);
exit(20);
}
else
{
print "#2parent process id:".$pid.PHP_EOL;
for ($i=0; $i <10 ; $i++) {
print "wait..".PHP_EOL;
sleep(10);
}
}
}
?>
