Description:
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Problem when retrieving a VT_DATE in a COM object if the date is < to 01/01/1970

the code works fine with with any date > 01/01/1970 

the problem is VT_Date can start at 01/01/1901 and $DOB->Value returns a timestamp starting from 1970 instead of 1901. While it makes easy to format the VT_Date with Date($format,$timestamp) it does not alow to retrieve dates < 1970 from a COM:VT_Date variable

for VT_Date < 1970 (year) ,$DOB->Value return -1 ...







Reproduce code:
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$query = new COM("DICOMobjects.DICOMQuery") ;
//settings to Query the Dicom Server"
$query->node="localhost";
$query->port="104";
$query->CallingAE="Client";
$query->CalledAE="Server";
$query->Name="*"; //tell the query to return any patient

$result = $query->DoQuery;//starts the query
$results = $query->Count;//number of items returned

for($i=1;$i<$results+1;$i++) 
{
    $Attrib=$answer->Attributes;
    $DOB = $Attrib->ItemByIndex(4);//Date of birth of the patient
    echo $DOB->value."<br>"; //is a VT_Date an returns a Timestamp
    echo date("d/m/Y",$DOB->value)."<br>"; //formats the timestamp

}

Expected result:
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the returned timestamp should not be -1 for dates < 1970
that makes the date unaccessible , and even for dates>1970 the timestamp should be given from 1901 and not 1970 like it is now

Actual result:
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A timestamp starting from 1901 and not 1970.

Please help me :p