PHP threading call to a php function asynchronously

Question

What I'm looking to do is load in some data from a database or from memcache asynchronously.

I know, I know. "PHP doesn't support threading".

But what about register_tick_function? Isn't that indeed threading?

Has anyone done any kind of predictive preload or really any background processing utilizing register_tick_function?

No, everything halts on a tick function. gearman is a nice way to offload some work to another process. Or a bit of forking can be done it you're not using php in a webserver but from the command line. — Wrikken
– Wrikken, Commented Dec 12, 2012 at 18:27
php does support threading, but i don't think you need that for your particular problem — Ibu
– Ibu, Commented Dec 12, 2012 at 18:27
@Wrikken, I understand that everything else halts on tick. But think of threading on a single processor, single threaded machine. That's how they implement threading. — Beachhouse
– Beachhouse, Commented Dec 12, 2012 at 19:11
No, PHP does not support threading. Forking, yes, native threading, no. I assume Ibu confuses it with something else... And yeah, pseudo threading like that can be attempted that way with ticks, but does not scale well at all of course. — Wrikken
– Wrikken, Commented Dec 12, 2012 at 19:17
Basically closing this. There is NO ADVANTAGE to using the tick function. Any delay in the tick function will delay code execution everywhere. — Beachhouse
– Beachhouse, Commented Dec 12, 2012 at 19:27

Thunder Rabbit · Accepted Answer · 2023-11-09 00:23:01Z

62

http://php.net/pthreads

http://docs.php.net/Thread

PHP certainly can support threading. Loading data from a SQL/NoSQL database in parallel is definitely a possibility. See the PHP manual, examples found in github and pecl packages.

Please note, the documentation did state that this is part of the core, this is ( my ) human error. You must install pthreads with a thread-safe version of php, it can be installed from pecl ( windows incuded, dlls @ http://windows.php.net/downloads/pecl/releases/pthreads ). Apologies.

edited Nov 9, 2023 at 0:23

Thunder Rabbit

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answered Dec 14, 2012 at 5:04

Joe Watkins

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3 Comments

Baba Over a year ago

Am not sure if this download links leads to the latest versions

hot_barbara Over a year ago

I know this is old but I think it's worth noting that pthreads at this time (3.1.6) only supports php 7.2+ so you'll need to build php with zts enabled form a version of php greater than or equal to 7.2

Kevin Wheeler Over a year ago

Apparently both of those URLs php.net/pthreads and docs.php.net/Thread say that they (pthreads) are no longer maintained and to use parallel instead (php.net/manual/en/book.parallel.php), except the comments on the bottom of this answer make it sound like parallel is also a dead end -> stackoverflow.com/a/15501449/3470632

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