PCNTL is short for Process Control, a PHP Extension implementing the Unix style of process creation, program execution, signal handling and process termination.
Documentation of the PHP PCNTL extension can be found here: https://php.net/pcntl
Questions tagged [pcntl]
157 questions
31
votes
6 answers
how to enable process control extension (PCNTL) in PHP MAMP?
I have MAMP and I need to enable -pcntl on my current MAMP installation.
How can I do so?
Thanks for your help.
Lina
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24
votes
1 answer
How does pcntl_fork work in PHP?
I'm confused about pcntl_fork in PHP.
I think it does multi-threading, but how does it work and how would I use it in a script?
user1432856
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22
votes
4 answers
pcntl_fork() returning, Fatal error: Call to undefined function pcntl_fork()
I'm trying to fork a command line run XAMPP php process using pcntl_fork(). When I run the command below:
$pid = pcntl_fork();
if($pid == -1){
file_put_contents('testlog.log',"\r\nFork Test",FILE_APPEND);
return 1; //error
}
else if($pid){
…
Ben Pearce
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22
votes
2 answers
pcntl not working on Ubuntu 'for security reasons'
I have installed pcntl on my PHP 5.4.6 running on Ubuntu 32-bit 12.10, using this article.
It didn't go smoothly at all because after compiling, when running make test I got the following errors. I am getting a warning each time that I'm trying to…
Oleg Belousov
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17
votes
2 answers
Can I rely on register_shutdown_function() being called on SIGTERM, if pcntl_signal() is set up?
I am working on an application that has periodically-called background processes. One of these was being called by cron, but I am looking for something more robust, so am converting it to run under Supervisor. (It will probably run for 10 minutes,…
halfer
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16
votes
2 answers
How to install PCNTL extension in Windows?
I am running PHPUnit in Windows and trying to install PHPUnit via composer.json:
"phpunit/php-invoker": "*"
...with this dependency, but I am getting this error:
phpunit/php-invoker 1.1.3 requires ext-pcntl * -> the requested PHP extension pcntl…
Yogesh
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11
votes
3 answers
PHP CLI in Windows: Handling Ctrl-C commands?
How can I handle CTRL+C in PHP on the command line? Pcntl_* functions do not work in Windows.
x74x61
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11
votes
5 answers
Enable PCNTL in Ubuntu PHP - test fails
I need help on How to: Enable PCNTL in Ubuntu PHP.
$ mkdir /tmp/phpsource
$ cd /tmp/phpsource
$ wget http://museum.php.net/php5/php-5.3.2.tar.gz
$ tar xvf php-5.3.2.tar.gz
$ cd php-5.3.2/ext/pcntl
$ phpize -bash: phpize: command not…
Folding Circles
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9
votes
3 answers
killing zombie children in parent processes
So I want to do the following:
Set up a daemon that forks a bunch of processes.
So the Daemon forks a bunch of processes
then forks another bunch of processes
the problem is the child processes might take a long time to exit. How do I prevent zombie…
user816604
9
votes
1 answer
Call to undefined function pcntl_fork() php-fpm nginx
I'm trying to use pcntl_fork() in php-fpm but it is not available and I get:
Call to undefined function pcntl_fork()
Even though I've out-commented the disable_functions in the php.ini. phpinfo() shows the author and php -m also lists pcntl. If I'm…
white_gecko
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9
votes
1 answer
What's the relation between declare(ticks) and a signal handler in php
I have some code like this, and I want to understand how does fork work, but I'm confused with declare(ticks=1).
when I put it in the first line, after the child process finished, the signal handler will be called, which is what I want; but when I…
zhaozhi
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8
votes
1 answer
Subsequent pcntl_signal signals not kicking off handler
Lemme begin by giving a basic description of the code I have. I start off with a main parent process (NOTE: I am not showing all functions for simplicity. Let me know if you need me to expand at any point):
declare(ticks=1);
pcntl_signal(SIGHUP,…
Aram Papazian
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7
votes
2 answers
How to install PHP extension 'pcntl' on my Mac OSX
My operating system is:Mac OSX 10.11
I'm trying to install Phabricator on my Mac, when I execute the command of
phabricator cpopt$ ./bin/phd start
I got an error:
"ERROR: The PHP extension 'pcntl' is not installed. You must install it to run…
Maker
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6
votes
1 answer
posix_kill vs pcntl_signal
This is a bit esoteric and it's possible this question will go unanswered until I troll the the source myself and answer it, but here goes:
I'm the author of a simple PHP Daemon library: https://github.com/shaneharter/PHP-Daemon. While PHP isn't…
Shane H
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6
votes
2 answers
How can I check a PDO MySQL connection for errors BEFORE I run a query?
My scripts are getting quite riddled with forked processes in a lot of different functions. Whenever pcntl_fork() is called, all MySQL connections are lost. If I run a query on a PDO MySQL connection I get the error "MySQL server has gone away".
The…
Hubro
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