General
-------
- rename soapobject to soapclient
- make sure soapvar and soapparam are really need
- make sure soapserver.map(), soap_encode_to_xml() and soap_encode_to_zval() are really need

SOAP
----
+ SOAP versioning model
- SOAP message must not contain a Document Type Declaration
- SOAP message MUST NOT contain Processing Instructions
- support for SOAP headers
  - actor attribute
  - mustUnderstend attribute
- make sure soap 1.1 and 1.2 are supported fully

Encoding
--------
- full support for standard simple types (
  + anyType
  ? duration, 
  ? anyURI, 
  ? QName, 
  ? NOTATION,
  ? normalizedString, 
  ? token, 
  ? language, 
  ? NMTOKEN, 
  ? Name, 
  ? NCName, 
  ? ID, 
  ? IDREF,
  ? IDREFS, 
  ? ENTITY, 
  ? ENTITIES, 
  ? unsignedLong)
- full support for standard date/time types (
  ? dateTime,
  ? time,
  ? date,
  ? gYearMonth,
  ? gYear,
  ? gMonthDay,
  ? gDay,
  ? gMonth)
? proper encoding of standard hexBinary type
? proper encoding of standard base64Binary type
- full support for arrays
  ? arrayType attribute
  + offset attribute
  + position attribute
  ? multidimensional arrays
  ? arrays of arrays
  - encoding of arrays with holes
- full support for structures???  
- references (id,href)
- references to external resources
- default values
- root attribute
? provide schema 1999/2001 support???
? make internal refrences for soap encoding (use seralization logic)???
? provide user space overriding of serialization certin objects and types???

WSDL
----
? support for style "rpc"/"document" encoding
? support for "encoded"/"literal" encoding
? support for "nillable" and "nil"
- support for user defined simple types
  - restiction
	  + base
	  - minExclusive (for numeric, date types)
		- minInclusive (for numeric, date types)
		- maxExclusive (for numeric, date types)
		- maxInclusive (for numeric, date types)
		- totalDigits (for decimal)
		- fractionDigits (for decimal)
		- length (for string, anyURI, hexBinary, base64Binary and derived)
		- minLength (for string, hexBinary, base64Binary and derived)
		- maxLength (for string, hexBinary, base64Binary and derived)
		- whiteSpace (preserve, replace [#x9,#xA,#xD=>#x20], collapse [replace+?])
		- pattern
	  ? enumeration
	- list ???
	- union ???
- support for user defined complex types
  - simpleContent extension   
  ? base
  - group
  	- name
  	- all
  	- choice
  	- sequence
  - all
  	- element
  - choice
  	- element
  	- group
  	- choice
  	- sequence
  	- any ???
  - sequence
  	- element
  	- group
  	- choice
  	- sequence
  	- any ???
  - attribute
- function/method overloading (test(int); test(string))
- wsdl caching
- wsdl auto generation

Error Handling
--------------
- ???

Transport
---------
+ support for https://
+ support for persistent HTTP connections (keep_alive)
- support for HTTP compression (gzip,x-gzip,defalte)
+ support for HTTP authentication
- support for HTTP proxies
- transport abstraction layer
? SoapAction HTTP header field
? HTTP status codes

UDDI
----
- ???

Interop Testing
---------------
- more rounds/groups
- ???