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 SoapClient->__construct()    (no version information, might be only in CVS) SoapClient->__construct() -- 
   SoapClient constructor
   说明class  SoapClient {  __construct ( mixed wsdl [, array options] ) } 
   This constructor creates SoapClient objects 
   in WSDL or non-WSDL mode.
   参数
    - wsdl
 
       URI of the WSDL file or NULL if working in 
       non-WSDL mode.
       - options
 
       An array of options. If working in WSDL mode, this parameter is optional.
       If working in non-WSDL mode, you must set the location 
       and uri options, where location is 
       the URL to request and uri is the target namespace of the
       SOAP service.
       
       The style and use options only work in
       non-WSDL mode. In WSDL mode, they come from the WSDL file.
       
       The soap_version option specifies whether to use SOAP
       1.1, or SOAP 1.2 client.
       
       For HTTP authentication, you may use the login and
       password options. For making an HTTP connection through
       a proxy server, use the options proxy_host,
       proxy_port, proxy_login
       and proxy_password.
       For HTTPS client certificate authentication use
       local_cert and passphrase options.
       
       The compression option allows to use compression
       of HTTP SOAP requests and responses.
       
       The encoding option defines internal character 
       encoding. This option does not change the encofing of SOAP requests (it is
       always utf-8), but converts strings into it.
       
       The classmap option can be used to map some WSDL 
       types to PHP classes. This option must be an array with WSDL types 
       as keys and names of PHP classes as values.
       
       The trace and exceptions options
       are useful for debuging purpose.
       
  
  例
      例子 1. SoapClient examples 
<?php
  $client = new SoapClient("some.wsdl");
  $client = new SoapClient("some.wsdl", array('soap_version'   => SOAP_1_2));
  $client = new SoapClient("some.wsdl", array('login'          => "some_name",                                             'password'       => "some_password"));
  $client = new SoapClient("some.wsdl", array('proxy_host'     => "localhost",                                             'proxy_port'     => 8080));
  $client = new SoapClient("some.wsdl", array('proxy_host'     => "localhost",                                             'proxy_port'     => 8080,                                             'proxy_login'    => "some_name",                                             'proxy_password' => "some_password"));
  $client = new SoapClient("some.wsdl", array('local_cert'     => "cert_key.pem"));
  $client = new SoapClient(null, array('location' => "http://localhost/soap.php",                                      'uri'      => "http://test-uri/"));
  $client = new SoapClient(null, array('location' => "http://localhost/soap.php",                                      'uri'      => "http://test-uri/",                                      'style'    => SOAP_DOCUMENT,                                      'use'      => SOAP_LITERAL));
  $client = new SoapClient("some.wsdl",    array('compression' => SOAP_COMPRESSION_ACCEPT | SOAP_COMPRESSION_GZIP));
  $server = new SoapClient("some.wsdl", array('encoding'=>'ISO-8859-1'));
  class MyBook {     public $title;     public $author; }
  $server = new SoapClient("books.wsdl", array('classmap' => array('book' => "MyBook")));
  ?>
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