In the code example, the num element is a SOAP array, and arrayType="xsd:integer[5]" indicates that it contains five elements of type integer.
<numbers xsi:type="SOAP-ENC:Array" SOAP-ENC:arrayType="xsd:integer[5]"> <item>1</item> <item>2</item> <item>3</item> <item>4</item> <item>5</item> </numbers>