SOAP PHP Implementations
<< Herong's Tutorial Notes on Web Service and SOAP
This chapter provides notes and tutorials on SOAP PHP implementations: PEAR SOAP, NuSOAP, and PHP Group SOAP.
SOAP PHP Implementations: PEAR::Package::SOAP and NuSOAP PHP 5.0.4 by The PHP Group Installing SOAP Library on Windows
SOAP PHP Implementations: PEAR::Package::SOAP and NuSOAP
PHP 5.0.4 by The PHP Group
Installing SOAP Library on Windows
Conclusion
There seems to be 3 popular PHP implementations of SOAP: PEAR SOAP, NuSOAP, and PHP Group SOAP. But I can not find any high level specifications for any of them.
The PHP Group SOAP 5.0.4 seems to be supporting SOAP 1.2.