I am trying to interface with a Vendors COM object. A particular function that I need to use takes two 2 dimensional variant arrays variant array, one ByVal and the other ByRef. The FAQ on COM says its not supported yet.

$PSearchCriteria[0][0] = "CLIENT_ID";
$PSearchCriteria[1][0] = "ACME";
//Passed ByVal
$SearchCriteria = new Variant($PSearchCriteria, VT_ARRAY);
$PResult = array();
//Passed ByRef
$Result = new Variant($PResult, VT_ARRAY | VT_BYREF);
$MaxDocs = 100;
$res = $synweb->SearchLike($SearchCriteria, $Result, $MaxDocs); <- Line 19

If I try to do this I get: 

Warning:  Invoke() failed: No description available in c:\apache\htdocs\microdea.php on line 19