inclusion

hello,

i try to use an inclusion in a web service server. Here the source :

function graphe($config) {
        require_once("vchoix.inc");
        $res = ChoixV ($param1,$param2);
                     return $res;
}

i have an error : Response not of type text/xml


ChoixV return a string. When my service return a string, the function graphe 
works. Error is only when i try to 
return ChoixV result from vchoix.inc file

Is it possible to use a function (and return its result) located in another 
file ?

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