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]
171 questions
0
votes
1 answer
Parent child does not catch signal after forking
I'm having a weird problem in PHP with symfony 1.4
I have a task that launches multiple workers, and, sometimes, I need to stop all the workers (for example, after a deployment).
I launch the task using start-stop-daemon, and I want to stop it by…
Talal MAZROUI
- 645
- 1
- 6
- 12
0
votes
1 answer
cakephp/php run function in background
I've never done this before, so I need some input.
Code (in general):
$cofig = Configure::read('config');
if ($config['stuff'] == 1){
$this->Session->setFlash('it is already done this month');
$this->redirect('/to/some/where');
…
uldo
- 19
- 2
- 8
0
votes
1 answer
Getting data from forked children
I am playing with pcntl_fork() in PHP.
I took the class that is written in the second comment, and tried to send data to it - which seems to work fine.
Now I did some processing on that data, and would like to receive some results in my parent…
Vlad Preda
- 9,780
- 7
- 36
- 63
0
votes
1 answer
how to start a terminated child process from parent in php
I am trying to start a child process from parent when its terminated normally or due to an error.Using pcntl_waitpid, It become possible to get status from child. By that status I want restart the same script or process again. Here is an…
user2764644
- 11
- 1
- 4
0
votes
1 answer
Single Database Connection in forked PHP Application
My application uses pcntl_fork to fork a childprocess which monitors a connected router.
So I instantiate the class ConnectionManager which forks themself into as many childprocesses as machines are needed to be monitored.
I'm using a external DB…
Ben Matheja
- 115
- 2
- 2
- 12
0
votes
0 answers
PHP: split work among 5 parallel tasks
I use an external API to gather data for an object. The way the external API is structured, I must make 5 separate calls to different parts of the API in order to get all the data I need.
Up to now I've been doing this sequentially, however it takes…
AaplMike
- 343
- 1
- 4
- 15
0
votes
1 answer
How to start and end new php procces?
I am trying to use a pcntl extetntion for PHP to run some methods of my CLI class in a new thread. I wrote a small test method:
private function startProcess($data)
{
$this->log('Start a child process');
$pid = pcntl_fork();
if($pid ==…
Kin
- 4,466
- 13
- 54
- 106
0
votes
1 answer
PHP forking tool produce zombie process
I am new on PHP forking and I just copy this code sample from PHP.net. Basically I have a tool that monitor a device and save the data into a database. This tool is running in background.
here is my code:
for(;;)
{
//build connection
$conn =…
Rey Papellero
- 1
- 2
0
votes
1 answer
Is incoming signals crashes blocking on a stream in php application
I used pcntl extension in my code like this : I bind a handler to some signal, for example SIGUSR1, and have a script which send signals to my application.
pcntl_signal(SIGUSR1, function ($signo){
echo 'Signal:' . $signo . PHP_EOL;
});
And I have…
Stanislav
- 33
- 6
0
votes
1 answer
Php forking and memory sharing drive me nuts
I have passed hours and days to find why php share the memory between my forked children and I figured that if the parent set a var in a function before forking then the function will always return the same result in the children :~
new…
beunwa
- 104
- 2
0
votes
0 answers
how to join forked processes in php
where in I need to fork a process. Then when their task completes, the parent process should go ahead and do some other work. How can this be done? Here's what I have done
$sql = "call some_sample_proc()";
$res =…
Shades88
- 7,934
- 22
- 88
- 130
0
votes
1 answer
PHP pcntl_fork() : lose code in browser
I'd like to implement bigpipe in PHP using pcntl.
However, there is something wrong when I visit the web page from browser.
test.php