在php7.1上配置pcntl_signal

Question

I've faced the issue with pcntl_signal after migration to php71.

I've installed php71 (brew install php71 --with-httpd24 --with-imap --with-postgresql) and its pcntl extension (brew install homebrew/php/php71-pcntl) but pcntl_signal() still not working

Please help me because i don't understand why it does not work.

P.S. I'm running the same code which was working on php56

Answer 1

After some research I found out that a new function called pcntl_async_signals() has been introduced in php71, so now instead of declare(ticks = 1); at the beginning of the file you have use pcntl_async_signals(true);

For my particular case I fixed if like:

<?php

namespace AppBundle\Command;

if (function_exists('pcntl_async_signals')) {
    // for php 7.1
    pcntl_async_signals(true);
} else {
    // for php 4.3.0+ (up to 7.0)
    declare(ticks = 1);
}

abstract class AbstractCommand {
    // use pcntl_signal() where you need
}

P.S. Link to documentation