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Table of Contents

• Concept
• posix function
• pcntl function
• PCNTL Predefined Constants
• Linux Kill(2)
• How to trigger SIGUSR1 and SIGUSR2 with php

Concept

• https://github.com/brianlmoon/Supervisor

• https://github.com/walkor/Workerman

• php 8.1 Fiber

  • https://php.watch/versions/8.1/fibers

posix function

• http://php.net/manual/en/ref.posix.php

• posix_kill

• posix_setsid

• posix_getpid

pcntl function

• http://php.net/manual/en/ref.pcntl.php

• pcntl_fork

• pcntl_signal

• pcntl_signal_dispatch

• pcntl_wait

• pcntl_wexitstatus

PCNTL Predefined Constants

• http://php.net/manual/en/pcntl.constants.php

Linux Kill(2)

• http://man7.org/linux/man-pages/man2/kill.2.html

       If sig is 0, then no signal is sent, but existence and permission
       checks are still performed; this can be used to check for the
       existence of a process ID or process group ID that the caller is
       permitted to signal.

  • Example: kill -0 your-id

• How to use kill send signal

  • https://www.cyberciti.biz/faq/unix-kill-command-examples/

How to trigger SIGUSR1 and SIGUSR2 with php

https://www.programmersought.com/article/6023314133/