Deferred code execution in php

Question

PHP

Greetings!

I faced such a question - how to implement the following:

The user enters the a.php page, redirects him to b.php and at the same time c.php is called and executed C.php
is a resource-intensive script that I would like to run in the background, in while the user went about his business on b.php

Answer 1

You can do this:
exec("/usr/bin/php /var/www/c.php > /dev/null &");
Then exec will release the console and the b.php script will continue to run and c.php will run in the background.

Answer 2

ZendX_Console_Process_Unix . True, it only works on *niks and requires the php-extension shmop, pcntl and posix. But it is easy to use, like boots.

Answer 3

the user went to the page and the ajax post-request was launched, in my opinion the simplest and most logical solution.

Answer 4

In b.php on the server side, send a POST request (using sockets) to c.php and close the connection without waiting for a response. But for this, you will need to enable ignore_user_abort in c.php.

Answer 5

c.php is loaded by ajax or iframe.
in the settimelimit(0) script to remove the time limit,
if the task can be divided into a "portion", then it's good. then execute in small portions with the same Ajax, then you can even show the loading indicator.

Answer 6

We went to a.php, created a task.txt file with a line for parameters (if necessary)
Then, by cron, we run the script-checker of the task.txt file every minute, which executes the necessary command
exec("/usr/bin/ php /var/www/c.php > /dev/null");

Answer 7

Check out Gearman ( gearman.org/ ). It suits just such purposes and there is integration with php. Review article — highload.com.ua/index.php/2010/07/09/gearman-and-php-asynchronous-tasks/

Answer 8

well, since we are talking about crowns, then man at

Answer 9

If you have your own server or VPS, use beanstalkd - this is a queue server. Written in Syakh, simple, fast, quite a lot of features like a task postponed for a given time. The interface to the puff is client (not an extension), although for me you can write your own on sockets - the protocol is very simple there

Answer 10

Search bots and ordinary visitors do not spare your web server much. An optimized per-minute cron request will get lost in their background. If there is no mandatory connection to the database for any client request + the flag of the presence of tasks in the queue hangs in the cache (memcached, file, etc.), then this load will not be critical.

Answer 11

fpm - "fastcgi_finish_request() - special function to finish request and flush all data while continuing to do something time-consuming"

Answer 12

the user went to the page and the ajax post-request was launched, in my opinion the simplest and most logical solution.

Answer 13

To execute a script in parallel in the background, there is such a thing as threads.
In syphony there is a suitable implementation - Process It is very easy
to integrate into the project . Start a separate process in b.php when you need it, and if suddenly c.php crashes b will continue to run

Answer 14

see here