PHP asynchronous reading (shell scripting)

Question

I have a PHP TCP daemon which provides data to clients. One of the features is to get info from "tail -f messages" command. So I have to run this command asynchronously and in case of new data, send it to the clients.

I have a problem how to create this asynchronous reader - when new data is added, run the method, otherwise do the other things you have to.

Mejmo

EDIT: My problem could be resolved by using some kinds of threads and IPC (does php support threads?).

score 1 · Answer 1 · answered Apr 18 '11 at 14:14

1

If you can install extensions, you can implement this using the libevent PHP extension.

answered Apr 18 '11 at 14:14

Evert

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score 0 · Answer 2 · answered Apr 18 '11 at 13:31

0

Use popen to execute tail -f message, passing 'r' as the $mode parameter. Then you can fread from the returned file pointer.

answered Apr 18 '11 at 13:31

Oswald

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No, this approach is blocking the script. – Mejmo Apr 18 '11 at 13:41

score -1 · Answer 3 · edited Mar 29 '17 at 00:26

-1

Try stream_set_blocking(), it should do the trick.

edited Mar 29 '17 at 00:26

Nathan Tuggy

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answered Mar 29 '17 at 00:04

weasel5i2

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PHP asynchronous reading (shell scripting)

3 Answers3