php - Pass value by reference to COM object function -

i have com object, contains function:

[id(1)]  hresult tst1([out] long * l, [out, retval] long * e );

create object , use in php , pass parameter reference:

$i=5; $f = new com('app.myobj'); $f->tst1(&$i);

got error:

call-time pass-by-reference has been deprecated

if pass $i without & (that should define "by reference") have same value of i equals 5 after tst1() execution

$i=5; $f = new com('app.myobj'); $f->tst1($i);

but inside of com object function changes passed value

stdmethodimp csomeobject::tst1(long* e) {     *e=3;     return s_ok; }

how pass reference in php while calling com object function?

Maxid