Extension of Zend_Soap_Wsdl to allow w3c data types

<?php
/**
 * CamelotWebService
 *
 * @package CamelotWebServices
 * @version $Id: W3C.php,v 1.0.30 2010-11-02T11:56:50+00:00 RichardQ $
 */
class Camelot_Soap_W3C extends Zend_Soap_Wsdl
    {
    /**
     * W3C XSD Type map.
     *
     * This maps the lowercased type to correct cased type.
     *
     * @var array
     */
    static protected $XSDTypeMap = array
        (
        'xsd:anyuri'           => 'xsd:anyURI',
        'xsd:base64binary'     => 'xsd:base64Binary',
        'xsd:boolean'          => 'xsd:boolean',
        'xsd:byte'             => 'xsd:byte',
        'xsd:date'             => 'xsd:date',
        'xsd:datetime'         => 'xsd:dateTime',
        'xsd:decimal'          => 'xsd:decimal',
        'xsd:double'           => 'xsd:double',
        'xsd:duration'         => 'xsd:duration',
        'xsd:float'            => 'xsd:float',
        'xsd:gday'             => 'xsd:gDay',
        'xsd:gmonth'           => 'xsd:gMonth',
        'xsd:gmonthday'        => 'xsd:gMonthDay',
        'xsd:gyear'            => 'xsd:gYear',
        'xsd:gyearmonth'       => 'xsd:gYearMonth',
        'xsd:hexbinary'        => 'xsd:hexBinary',
        'xsd:int'              => 'xsd:int',
        'xsd:integer'          => 'xsd:integer',
        'xsd:long'             => 'xsd:long',
        'xsd:normalizedstring' => 'xsd:normalizedString',
        'xsd:short'            => 'xsd:short',
        'xsd:string'           => 'xsd:string',
        'xsd:time'             => 'xsd:time',
        'xsd:token'            => 'xsd:token',
        );

    /**
     * Add a W3C defined type.
     *
     * This is based upon the built-in datatypes as defined at
     * {@link http://www.w3.org/TR/2004/REC-xmlschema-2-20041028/#built-in-datatypes Built-in datatypes}.
     * Not all the types are supported, specifically :
     * 1. anySimpleType
     * 2. ENTITIES
     * 3. ENTITY
     * 4. ID
     * 5. IDREF
     * 6. IDREFS
     * 7. language
     * 8. Name
     * 9. NCName
     * 10. negativeInteger
     * 11. NMTOKEN
     * 12. NMTOKENS
     * 13. nonNegativeInteger
     * 14. nonPositiveInteger
     * 15. NOTATION
     * 16. positiveInteger
     * 17. QName
     * 18. unsignedByte
     * 19. unsignedInt
     * 20. unsignedLong
     * 21. unsignedShort
     *
     * Additionally, new built-in datatypes, as defined at
     * {@link http://www.w3.org/TR/xmlschema11-2/datatypes.html#built-in-datatypes Built-in Datatypes and Their Definitions}
     * are not supported. These include :
     * 1. anyAtomicType
     * 2. dayTimeDuration
     * 3. dayTimeStamp - This type is going to be supported via the dateTime type with the optional timezone element always being populated.
     * 4. precisionDecimal
     * 5. yearMonthDuration
     *
     * @param  string $type Name of the type to be specified
     *
     * @return string XSD Type for the given PHP type
     *
     * @uses Zend_Soap_Wsdl::getType() to handle all unknown types.
     */
    public function getType($type)
        {
        return isset(self::$XSDTypeMap[strtolower($type)]) ? self::$XSDTypeMap[strtolower($type)] : parent::getType($type);
        }
    }