DIO in PHP5

[Webfeet]

Hi, folks. Hope someone can help me out on this.

I am running php5 as a module in Apache 2.2 in Windows XP. It all installed reasonably easily using the precompiled binaries and works well.

Now I need to use the Direct IO (DIO) functions to get byte-level control of the serial port at the server. DIO is not available in the standard precompiled version.

The manual says:
"To get these functions to work, you have to configure PHP with --enable-dio."

From the syntax, this looks like a compile-time switch. (Please tell me that's wrong.) But when I try to compile, I am told --enable-dio is an unknown option.

The manual also says:
"No external libraries are needed to build this extension."

So how do you make the option known to the build script?

Assuming I can find an answer to that, a more general question is, how do you begin to decide which options to enable or disable, and how do you save the selections when you've made them?

Thanks for any help.

Cheers - F

[tsinka]

Hi,

if you installed php 5.1 then you need to download the pecl package (the link is on the download page). This package contains additional extension including php_dio.dll. Just extract the package to the ext directory and enable the extension by adding extension=php_dio.dll to php.ini in the extension section.

php_dio.dll comes bundled with php 5.0 so you don't need the pecl package for php 5.0. Just add php_dio.dll to php.ini.

Thomas

[Webfeet]

Thomas,

Many thanks for that. I went through that process - with a bit of fiddling with the extension_dir - and I seem to have DIO available.

I wish I had asked you two days ago before I got into compiling from the source.

Now I have some work to do to make good use of the DIO.

Thanks again - Frank