Re: Using C libraries and PHP - calling functions in external libraries

icu5545 wrote:
On Feb 23, 5:29 pm, Otis <otie_nos...@xxxxxxx> wrote:
>> You might try a host that allows dynamic loading of your dll via the
dl() function.

Unfortunately, my .dll is a Windows .dll (I think it is compiled with C),
not a PHP extension - and it needs to run on my hosted UNIX server, so I
don't think you can just put a Windows .dll on a UNIX server and expect a
PHP call to it to respond properly.

Can you???

Otis

Norman Peelman wrote:
Otis wrote:
Currently I am running a compiled C program (called swetest) on Linux
from PHP using the exec() command. This allows me to get the
calculations I need. But some web hosts out there disable the exec()
command and I am stuck. What are the ways in which I might be able to
call the functions in swetest directly from PHP without having to rely
on the PHP exec() command and its buddies like system, shell_exec(),
etc., which are also disabled.
I have the following C files available:
swetest.c
libswe.a (which I guess is the created library)
On a Windows system, I can make a .dll (astro_php.dll), then call it
from PHP thusly:
$obj = new COM("astro_php.astro_php_cls");
$output=$obj->Get_geo_planet("2454507.5", "2");
echo $output;
How does one do something similar on Linux instead of Windows?
Thank you.
Otis
You might try a host that allows dynamic loading of your dll via the
dl() function.

Nope, unless the server is actually running in a virtual environment
utilizing Windows as its OS. (A very long shot.) Anywho, you need a
file with the extension ".so" to run on a Linux variant. If you had
the source, you could port it to Linux using a Live CD (or plain old
install) to compile it.

Another thing that I am completely unsure about is utilizing Wine
(Windows file emulator).

NOTE: the Wine thing is a bit of a stretch in itself. I'm not actually
sure it's possible. And it certainly would / should not be possible on
shared hosting.


Correct. A Windows DLL will not run on a Unix/Linux server. It will only run under Windows - either standalone or on a virtual machine, but it must be Windows. Not even Wine will allow the DLL to run.

It would be theoretically possible to make a Windows DLL run under Linux - but it would basically require creating a Windows emulator under Linux. It's easier to just use a virtual machine.

If this MUST run under Linux/Unix, it must be recompiled. Whether it works or not will depend on how many OS-specific functions it uses.

--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@xxxxxxxxxxxxx
==================

.

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