php - PHP 中 exit() 和 posix_kill(getmypid(), SIGKILL) 的区别

Question

有人可以解释 exit() 之间的区别吗？和 posix_kill(getmypid(), SIGKILL)在 PHP 代码中？

Answer 1

来自 exit() docs page :

Terminates execution of the script. Shutdown functions and object destructors will always be executed even if exit() is called.

另一方面，SIGKILL 不允许接收信号的进程进行任何清理。

When sent to a program, SIGKILL causes it to terminate immediately. In contrast to SIGTERM and SIGINT, this signal cannot be caught or ignored, and the receiving process cannot perform any clean-up upon receiving this signal.

( http://en.wikipedia.org/wiki/SIGKILL#Usage )