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This class can run code asynchronously using the PHP program.
It can take the code of a given closure and makes it run using the PHP program to create a separate process.
The class can take callback functions to run when the called code finishes, or in case of error.
How this work?
Well its basically "exec" with serialised closure. "Dressed" in nice libs like symfony process and console.
I serialise callable function and sent to child process by exec. To get callback I register shutdown function and wait for process to finish.
Why not pcntl ?
- Pcntl extension fork, so you can forget using it in web applications like apache2/php-fpm etc its only for CLI
- forks retains the parent state (for example open files) so its problematic
- Calling exec is slower then fork
- Some resource/function/data must be passed directly to closure
- https://www.phproundtable.com/episode/asynchronous-php - good start to "know how" make php async
- https://amphp.org/ - non-blocking framework for PHP
Sure take a look - https://github.com/krowinski/async/blob/master/example/example.php
Supports M$ Windows?
- process limit
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