Shared Memory

[Anon]

I've been playing with it for most of the evening, and have come to the conclusion that PHP cannot access shared memory not created by PHP itself. I can find no way to 'attach' to or 'get_var' from shared memory created by another process. Is this indeed the case?

[ame12]

You didn't mention a platform/OS - but this is not easy to do under NT. You would need to write a custom (C) extension to get true file mapping capabilities.

However... most folks share stuff between apps by using files. You can even use flock() to coordinate who has access when (and simulate semaphores or other intertask communication). Files will still be pretty quick as long as the reads and writes aren't too lengthy.

Dave

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[Anon]

Sorry, I forget that PHP runs on Win32; I was referring to Linux, where shared memory is indigenous.

You are correct in that I'm trying to share information between apps, but due to the high update rate, I'm trying to avoid using the file-system.