Using C libraries and PHP - calling functions in external libraries

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
.

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