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(PHP 5 >= 5.0.1)
SoapClient::__getFunctions — Returns list of available SOAP functions
Returns an array of functions described in the WSDL for the Web service.
Note:
此函数仅在 WSDL 模式下生效。
此函数没有参数。
The array of SOAP function prototypes, detailing the return type, the function name and type-hinted paramaters.
Example #1 SoapClient::__getFunctions() example
  <?php
$client  = new  SoapClient ( 'http://soap.amazon.com/schemas3/AmazonWebServices.wsdl' );
 var_dump ( $client -> __getFunctions ());
 ?>   以上例程会输出:
array(26) {
  [0]=>
  string(70) "ProductInfo KeywordSearchRequest(KeywordRequest $KeywordSearchRequest)"
  [1]=>
  string(79) "ProductInfo TextStreamSearchRequest(TextStreamRequest $TextStreamSearchRequest)"
  [2]=>
  string(64) "ProductInfo PowerSearchRequest(PowerRequest $PowerSearchRequest)"
...
  [23]=>
  string(107) "ShoppingCart RemoveShoppingCartItemsRequest(RemoveShoppingCartItemsRequest $RemoveShoppingCartItemsRequest)"
  [24]=>
  string(107) "ShoppingCart ModifyShoppingCartItemsRequest(ModifyShoppingCartItemsRequest $ModifyShoppingCartItemsRequest)"
  [25]=>
  string(118) "GetTransactionDetailsResponse GetTransactionDetailsRequest(GetTransactionDetailsRequest $GetTransactionDetailsRequest)"
}
 
[#1] Beebs [2013-11-13 02:26:11]
The following code works for me while it appears soap.amazon.com has been deprecated and taken out of service. http://webservices.amazon.com has replaced Amazon's SOAP.
<?php
$client = new SoapClient('http://webservices.amazon.com/AWSECommerceService/AWSECommerceService.wsdl');
var_dump($client->__getFunctions());
?>
[#2] hasegeli at arebt dot com [2009-06-02 00:19:02]
This function did not work if schema is not in wsdl file.
[#3] Dougal Matthews [2008-07-17 01:24:44]
example for amazon webservice
<?php
$wsdl_url =
  "http://soap.amazon.com/schemas3/AmazonWebServices.wsdl";
$client     = new SoapClient($wsdl_url);
var_dump($client->__getFunctions());
?>