php中soap 的使用实例无需手写WSDL文件，提供自动生成WSDL文件类

Bertha 。 2021-09-11 05:06 269阅读 0赞

http://www.cnblogs.com/phpdragon/archive/2012/06/10/2544171.html

最近工作的内容使用到了接口！  
对于系统接口：  
现下接触的有两种！

1、URL类型的接口

URL路由带参数式的接口！这个很好做！只要有过Web开发经验的人都能完成！  
这种接口数据不够隐蔽性，可以直接在浏览其中看到，

如支付宝的交易请求URL。需要加一个MD5签名，和服务器端的再次向支付宝服务器发送验证！  
虽然soap方式传递的数据隐蔽性很好!但为了数据安全，难免也需要进行数据签名。  
  
2、SOAP类型的接口

无关编程语言、无关平台、扩展性很好  
  
要实现一个SOAP 型的接口，有两种方式：一种有WSDL文件方式、一中无WSDL文件方式！

对于热爱研究型的人来说,使用第一种方式可以让你清楚的了解[PHP][]是怎么创建了一个Web Service！  
但第一种对于新手来说，创建一个XML格式的WSDL文件，是比较难的，这你的先了解熟悉什么是XML！  
学会XML语法！  
  但对于一个急于解决问题的人来说！没有这么多的时间去熟悉！所以这是件烦恼的事！  
不过不急，上面说了，还有一种无需WSDL文件的方式！而且，本讲解还提供了一个自动生成WSDL文件的类！

讲解前，先配置下PHP的soap环境支持：  
  
找到php.ini文件  
；extension=php\_soap.dll

删除掉"；" ，重启apache服务器

一、有WSDL文件方式  
    在这里先介绍标准的webservice。   
那么如何创建wsdl呢？对于PHP来说这确实是件很不容易的事情，有人说用zend studio创建很方便，这是一种方法。但对于那些不喜欢用zend studio的人来说，会觉得创建一个web service还要安装zend studio，太强人所难了。  
    在这里介绍一个简单的方法，到网上下载SoapDiscovery.class.php类，里面有个公用方法：getWSDL，这个方法末尾是用的return，那么，你修改一下这个方法：   
//return sprintf('%s%s%s%s%s%s', $headerWSDL, $portTypeWSDL, $bindingWSDL, $serviceWSDL, $messageWSDL, '</definitions>');   
//生成wsdl文件，将上面的return注释   
$fso = fopen($this->class\_name . ".wsdl" , "w");   
fwrite($fso, sprintf('%s%s%s%s%s%s', $headerWSDL, $portTypeWSDL, $bindingWSDL, $serviceWSDL, $messageWSDL, '</definitions>'));   
现在生成wsdl的类有了，SoapDiscovery.class.php（源码在最末尾）。

再准备一个提供服务的Service.php类文件或者函数就可以创建wsdl了!

![复制代码][copycode.gif]

<?php
    class Service {
    
        public function HelloWorld() {
            return "Hello";
        }
    
        public function Add($a, $b) {
            return $a + $b;
        }
    
    }
    ?>

![复制代码][copycode.gif]

创建wsdl文件的creat\_wsdl.php

![复制代码][copycode.gif]

<?php
    
    include("Service.php");
    include("SoapDiscovery.class.php");
    
    $disco = new SoapDiscovery('Service', 'soap'); //第一个参数是类名（生成的wsdl文件就是以它来命名的），即Service类，第二个参数是服务的名字（这个可以随便写）。
    $disco->getWSDL();

![复制代码][copycode.gif]

运行create\_wsdl.php文件，此时会生成一个Service.wsdl的文件

再在Service.php文件中添加一些代码

![复制代码][copycode.gif]

<?php
    
    class Service {
    
        public function HelloWorld() {
            return "Hello";
        }
    
        public function Add($a, $b) {
            return $a + $b;
        }
    
    }
    
    $server = new SoapServer('Service.wsdl', array('soap_version' => SOAP_1_2));
    $server->setClass("Service"); //注册Service类的所有方法 
    $server->handle(); //处理请求
     
    ?>

![复制代码][copycode.gif]

创建webservice客户端程序，[测试][Link 1]webservice是否有效，文件名是：client.php   
将以下内容拷贝进去：

![复制代码][copycode.gif]

<?php
    
    　ini_set('soap.wsdl_cache_enabled', "0"); //关闭wsdl缓存
    
      $soap = new SoapClient('http://localhost/Dragon/soap/Service.php?wsdl');
    　echo $soap->Add(28, 2);
      echo $soap->__soapCall('Add',array(28,2))//或这样调用

![复制代码][copycode.gif]

OK！测试通过！

二、无WSDL文件方式

服务器端

![复制代码][copycode.gif]

<?php
    class Service
    {
      public function HelloWorld()
       {
          return  "Hello";
       }
      public  function Add($a,$b)
       {
          return $a+$b;
       }
    }
    $server=new SoapServer(null,array('uri' => "abcd"));
    $server->setClass("Service");
    $server->handle();

![复制代码][copycode.gif]

客户端

![复制代码][copycode.gif]

<?php
      try {
      $soap = new SoapClient(null, array(
      "location" => "http://localhost/Dragon/soap/Service.php",
      "uri" => "abcd", //资源描述符服务器和客户端必须对应
      "style" => SOAP_RPC,
      "use" => SOAP_ENCODED
      ));
    
      echo $soap->Add(12, 2);
      } catch (Exction $e) {
      echo print_r($e->getMessage(), true);
      }

![复制代码][copycode.gif]

三．出现的问题。

1.在方法中对属性的赋值在其他方法中不起作用。  
比如在客户端调用服务端某个方法对某个属性赋值。  
在其他方法里就不能用。但在 \_\_construct 方法中对属性的赋值是可以个在其他方法中使用的。

2. 提示 Client\] looks like we got no XML document错误。  
服务器端文件在<?php ?> 标签前后都不要有任何数据包括空格，空行。

3. Warning: SoapClient::SoapClient(): I/O warning : failed to load external entity  
原因如下：PHP程序作为 SOAP客户端 采用 WSDL 模式访问远端服务器的时候，PHP是通过调用 libcurl 实现的。至少在 PHP5.2.X 是这样的。如果采用 non-WSDL 模式，就不需要 libcurl。除了 了ibcurl以外，至少还关联的库包括：libidn,ibgcc,libiconv,libintl,openssl

现在，你已经解决你了系统接口的问题了！剩下的空余时间，就有必要去了解什么是SOAP、http协议、XML了！

SoapDiscovery.class.php 文件

![ExpandedBlockStart.gif][]

![复制代码][copycode.gif]

<?php
    
    /**
     * Copyright (c) 2005, Braulio Jos?Solano Rojas
     * All rights reserved.
     * 
     * Redistribution and use in source and binary forms, with or without modification, are
     * permitted provided that the following conditions are met:
     * 
     *     Redistributions of source code must retain the above copyright notice, this list of
     *     conditions and the following disclaimer. 
     *     Redistributions in binary form must reproduce the above copyright notice, this list of
     *     conditions and the following disclaimer in the documentation and/or other materials
     *     provided with the distribution. 
     *     Neither the name of the Solsoft de Costa Rica S.A. nor the names of its contributors may
     *     be used to endorse or promote products derived from this software without specific
     *     prior written permission.
     * 
     * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
     * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
     * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
     * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
     * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     * 
     *
     * @version $Id$
     * @copyright 2005 
     */
    
    /**
     * SoapDiscovery Class that provides Web Service Definition Language (WSDL).
     * 
     * @package SoapDiscovery
     * @author Braulio Jos?Solano Rojas
     * @copyright Copyright (c) 2005 Braulio Jos?Solano Rojas
     * @version $Id$
     * @access public
     * */
    class SoapDiscovery {
    
        private $class_name = '';
        private $service_name = '';
    
        /**
         * SoapDiscovery::__construct() SoapDiscovery class Constructor.
         * 
         * @param string $class_name
         * @param string $service_name
         * */
        public function __construct($class_name = '', $service_name = '') {
            $this->class_name = $class_name;
            $this->service_name = $service_name;
        }
    
        /**
         * SoapDiscovery::getWSDL() Returns the WSDL of a class if the class is instantiable.
         * 
         * @return string
         * */
        public function getWSDL() {
            if (empty($this->service_name)) {
                throw new Exception('No service name.');
            }
            $headerWSDL = "<?xml version=\"1.0\" ?>\n";
            $headerWSDL.= "<definitions name=\"$this->service_name\" targetNamespace=\"urn:$this->service_name\" xmlns:wsdl=\"http://schemas.xmlsoap.org/wsdl/\" xmlns:soap=\"http://schemas.xmlsoap.org/wsdl/soap/\" xmlns:tns=\"urn:$this->service_name\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:SOAP-ENC=\"http://schemas.xmlsoap.org/soap/encoding/\" xmlns=\"http://schemas.xmlsoap.org/wsdl/\">\n";
            $headerWSDL.= "<types xmlns=\"http://schemas.xmlsoap.org/wsdl/\" />\n";
    
            if (empty($this->class_name)) {
                throw new Exception('No class name.');
            }
    
            $class = new ReflectionClass($this->class_name);
    
            if (!$class->isInstantiable()) {
                throw new Exception('Class is not instantiable.');
            }
    
            $methods = $class->getMethods();
    
            $portTypeWSDL = '<portType name="' . $this->service_name . 'Port">';
            $bindingWSDL = '<binding name="' . $this->service_name . 'Binding" type="tns:' . $this->service_name . "Port\">\n<soap:binding style=\"rpc\" transport=\"http://schemas.xmlsoap.org/soap/http\" />\n";
            $serviceWSDL = '<service name="' . $this->service_name . "\">\n<documentation />\n<port name=\"" . $this->service_name . 'Port" binding="tns:' . $this->service_name . "Binding\"><soap:address location=\"http://" . $_SERVER['SERVER_NAME'] . ':' . $_SERVER['SERVER_PORT'] . $_SERVER['PHP_SELF'] . "\" />\n</port>\n</service>\n";
            $messageWSDL = '';
            foreach ($methods as $method) {
                if ($method->isPublic() && !$method->isConstructor()) {
                    $portTypeWSDL.= '<operation name="' . $method->getName() . "\">\n" . '<input message="tns:' . $method->getName() . "Request\" />\n<output message=\"tns:" . $method->getName() . "Response\" />\n</operation>\n";
                    $bindingWSDL.= '<operation name="' . $method->getName() . "\">\n" . '<soap:operation soapAction="urn:' . $this->service_name . '#' . $this->class_name . '#' . $method->getName() . "\" />\n<input><soap:body use=\"encoded\" namespace=\"urn:$this->service_name\" encodingStyle=\"http://schemas.xmlsoap.org/soap/encoding/\" />\n</input>\n<output>\n<soap:body use=\"encoded\" namespace=\"urn:$this->service_name\" encodingStyle=\"http://schemas.xmlsoap.org/soap/encoding/\" />\n</output>\n</operation>\n";
                    $messageWSDL.= '<message name="' . $method->getName() . "Request\">\n";
                    $parameters = $method->getParameters();
                    foreach ($parameters as $parameter) {
                        $messageWSDL.= '<part name="' . $parameter->getName() . "\" type=\"xsd:string\" />\n";
                    }
                    $messageWSDL.= "</message>\n";
                    $messageWSDL.= '<message name="' . $method->getName() . "Response\">\n";
                    $messageWSDL.= '<part name="' . $method->getName() . "\" type=\"xsd:string\" />\n";
                    $messageWSDL.= "</message>\n";
                }
            }
            $portTypeWSDL.= "</portType>\n";
            $bindingWSDL.= "</binding>\n";
            //return sprintf('%s%s%s%s%s%s', $headerWSDL, $portTypeWSDL, $bindingWSDL, $serviceWSDL, $messageWSDL, '</definitions>');
            //生成wsdl文件，将上面的return注释
            $fso = fopen($this->class_name . ".wsdl", "w");
            fwrite($fso, sprintf('%s%s%s%s%s%s', $headerWSDL, $portTypeWSDL, $bindingWSDL, $serviceWSDL, $messageWSDL, '</definitions>'));
        }
    
        /**
         * SoapDiscovery::getDiscovery() Returns discovery of WSDL.
         * 
         * @return string
         * */
        public function getDiscovery() {
            return "<?xml version=\"1.0\" ?>\n<disco:discovery xmlns:disco=\"http://schemas.xmlsoap.org/disco/\" xmlns:scl=\"http://schemas.xmlsoap.org/disco/scl/\">\n<scl:contractRef ref=\"http://" . $_SERVER['SERVER_NAME'] . ':' . $_SERVER['SERVER_PORT'] . $_SERVER['PHP_SELF'] . "?wsdl\" />\n</disco:discovery>";
        }
    
    }
    
    ?>

![复制代码][copycode.gif]

=================================================================================

修正版：  
根据YII 的CWsdlGenerator改变而来，

增加了接口参数的类型识别；

使用前需使用IDE对方法名进行注释，方可自动生成有效的WSDL文件。（具体原因可查看代码processMethod方法中的115行）

![26180737-97693e9cc55d4ba2b016eb6783a9378d.jpg][]

调用方法：

<?php

include(dirname(__FILE__) . './Service.class.php');

include(dirname(__FILE__) . './SoapDiscovery.class.php'); 
    $disco = new SoapDiscovery(); 
    $disco->getWSDL('service', 'http://www.xxx.com/service.php');

![ExpandedBlockStart.gif][]

![复制代码][copycode.gif]

<?php
    
    /**
     * CWsdlGenerator class file.
     *
     * @author Qiang Xue <qiang.xue@gmail.com>
     * @link http://www.yiiframework.com/
     * @copyright Copyright © 2008-2011 Yii Software LLC
     * @license http://www.yiiframework.com/license/
     */
    
    /**
     * CWsdlGenerator generates the WSDL for a given service class.
     *
     * The WSDL generation is based on the doc comments found in the service class file.
     * In particular, it recognizes the '@soap' tag in the comment and extracts
     * API method and type definitions.
     *
     * In a service class, a remote invokable method must be a public method with a doc
     * comment block containing the '@soap' tag. In the doc comment, the type and name
     * of every input parameter and the type of the return value should be declared using
     * the standard phpdoc format.
     *
     * CWsdlGenerator recognizes the following primitive types (case-sensitive) in
     * the parameter and return type declarations:
     * <ul>
     * <li>str/string: maps to xsd:string;</li>
     * <li>int/integer: maps to xsd:int;</li>
     * <li>float/double: maps to xsd:float;</li>
     * <li>bool/boolean: maps to xsd:boolean;</li>
     * <li>date: maps to xsd:date;</li>
     * <li>time: maps to xsd:time;</li>
     * <li>datetime: maps to xsd:dateTime;</li>
     * <li>array: maps to xsd:string;</li>
     * <li>object: maps to xsd:struct;</li>
     * <li>mixed: maps to xsd:anyType.</li>
     * </ul>
     *
     * If a type is not a primitive type, it is considered as a class type, and
     * CWsdlGenerator will look for its property declarations. Only public properties
     * are considered, and they each must be associated with a doc comment block containg
     * the '@soap' tag. The doc comment block should declare the type of the property.
     *
     * CWsdlGenerator recognizes the array type with the following format:
     * <pre>
     * typeName[]: maps to tns:typeNameArray
     * </pre>
     *
     * The following is an example declaring a remote invokable method:
     * <pre>
     * / **
     *   * A foo method.
     *   * @param string name of something
     *   * @param string value of something
     *   * @return string[] some array
     *   * @soap
     *   * /
     * public function foo($name,$value) {...}
     * </pre>
     *
     * And the following is an example declaring a class with remote accessible properties:
     * <pre>
     * class Foo {
     *     / **
     *       * @var string name of foo
     *       * @soap
     *       * /
     *     public $name;
     *     / **
     *       * @var Member[] members of foo
     *       * @soap
     *       * /
     *     public $members;
     * }
     * </pre>
     * In the above, the 'members' property is an array of 'Member' objects. Since 'Member' is not
     * a primitive type, CWsdlGenerator will look further to find the definition of 'Member'.
     *
     * @author Qiang Xue <qiang.xue@gmail.com>
     * @version $Id: CWsdlGenerator.php 2799 2011-01-01 19:31:13Z qiang.xue $
     * @package system.web.services
     * @since 1.0
     */
    class SoapDiscovery {
    
        /**
         * @var string the namespace to be used in the generated WSDL.
         * If not set, it defaults to the name of the class that WSDL is generated upon.
         */
        public $namespace;
    
        /**
         * @var string the name of the generated WSDL.
         * If not set, it defaults to "urn:{$className}wsdl".
         */
        public $serviceName;
        private $_operations;
        private $_types;
        private $_messages;
    
        /**
         * Generates the WSDL for the given class.
         * @param string $className class name
         * @param string $serviceUrl Web service URL
         * @param string $encoding encoding of the WSDL. Defaults to 'UTF-8'.
         * @return string the generated WSDL
         */
        public function getWSDL($className, $serviceUrl, $encoding = 'UTF-8') {
            $this->_operations = array();
            $this->_types = array();
            $this->_messages = array();
            if ($this->serviceName === null)
                $this->serviceName = $className;
            if ($this->namespace === null)
                $this->namespace = "urn:{
         $className}wsdl";
    
            $reflection = new ReflectionClass($className);
            foreach ($reflection->getMethods() as $method) {
                if ($method->isPublic())
                    $this->processMethod($method);
            }
    
            //return $this->buildDOM($serviceUrl, $encoding)->saveXML();
    
            $fso = fopen($this->serviceName . ".wsdl", "w");
            fwrite($fso, $this->buildDOM($serviceUrl, $encoding)->saveXML());
        }
    
        /*
         * @param ReflectionMethod $method method
         */
    
        private function processMethod($method) {
            $comment = $method->getDocComment();
    
            if (strpos($comment, '@soap') === false)
                return;
            
            $methodName = $method->getName();
            $comment = preg_replace('/^\s*\**(\s*?$|\s*)/m', '', $comment);
            $params = $method->getParameters();
            $message = array();
            $n = preg_match_all('/^@param\s+([\w\.]+(\[\s*\])?)\s*?(.*)$/im', $comment, $matches);
    
            if ($n > count($params))
                $n = count($params);
            for ($i = 0; $i < $n; ++$i)
                $message[$params[$i]->getName()] = array($this->processType($matches[1][$i]), trim($matches[3][$i])); // name => type, doc
    
    
            $this->_messages[$methodName . 'Request'] = $message;
    
            if (preg_match('/^@return\s+([\w\.]+(\[\s*\])?)\s*?(.*)$/im', $comment, $matches))
                $return = array($this->processType($matches[1]), trim($matches[2])); // type, doc
            else
                $return = null;
    
            $this->_messages[$methodName . 'Response'] = array('return' => $return);
    
            if (preg_match('/^\/\*+\s*([^@]*?)\n@/s', $comment, $matches))
                $doc = trim($matches[1]);
            else
                $doc = '';
            $this->_operations[$methodName] = $doc;
        }
    
        /*
         * @param string $type PHP variable type
         */
    
        private function processType($type) {
            static $typeMap = array(
        'string' => 'xsd:string',
        'str' => 'xsd:string',
        'int' => 'xsd:int',
        'integer' => 'xsd:integer',
        'float' => 'xsd:float',
        'double' => 'xsd:float',
        'bool' => 'xsd:boolean',
        'boolean' => 'xsd:boolean',
        'date' => 'xsd:date',
        'time' => 'xsd:time',
        'datetime' => 'xsd:dateTime',
        'array' => 'soap-enc:Array',
        'object' => 'xsd:struct',
        'mixed' => 'xsd:anyType',
            );
            if (isset($typeMap[$type]))
                return $typeMap[$type];
            else if (isset($this->_types[$type]))
                return is_array($this->_types[$type]) ? 'tns:' . $type : $this->_types[$type];
            else if (($pos = strpos($type, '[]')) !== false) { // if it is an array
                $type = substr($type, 0, $pos);
                if (isset($typeMap[$type]))
                    $this->_types[$type . '[]'] = 'xsd:' . $type . 'Array';
                else {
                    $this->_types[$type . '[]'] = 'tns:' . $type . 'Array';
                    $this->processType($type);
                }
                return $this->_types[$type . '[]'];
            }
        }
    
        /*
         * @param string $serviceUrl Web service URL
         * @param string $encoding encoding of the WSDL. Defaults to 'UTF-8'.
         */
    
        private function buildDOM($serviceUrl, $encoding) {
            $xml = "<?xml version=\"1.0\" encoding=\"$encoding\"?>
    <definitions name=\"{
          $this->serviceName}\" targetNamespace=\"{
         $this->namespace}\"
         xmlns=\"http://schemas.xmlsoap.org/wsdl/\"
         xmlns:tns=\"{
          $this->namespace}\"
         xmlns:soap=\"http://schemas.xmlsoap.org/wsdl/soap/\"
         xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\"
         xmlns:wsdl=\"http://schemas.xmlsoap.org/wsdl/\"
         xmlns:soap-enc=\"http://schemas.xmlsoap.org/soap/encoding/\"></definitions>";
    
            $dom = new DOMDocument();
            $dom->loadXml($xml);
            $this->addTypes($dom);
    
            $this->addMessages($dom);
            $this->addPortTypes($dom);
            $this->addBindings($dom);
            $this->addService($dom, $serviceUrl);
    
            return $dom;
        }
    
        /*
         * @param DOMDocument $dom Represents an entire HTML or XML document; serves as the root of the document tree
         */
    
        private function addTypes($dom) {
            if ($this->_types === array())
                return;
            $types = $dom->createElement('wsdl:types');
            $schema = $dom->createElement('xsd:schema');
            $schema->setAttribute('targetNamespace', $this->namespace);
            foreach ($this->_types as $phpType => $xmlType) {
                if (is_string($xmlType) && strrpos($xmlType, 'Array') !== strlen($xmlType) - 5)
                    continue;  // simple type
                $complexType = $dom->createElement('xsd:complexType');
                if (is_string($xmlType)) {
                    if (($pos = strpos($xmlType, 'tns:')) !== false)
                        $complexType->setAttribute('name', substr($xmlType, 4));
                    else
                        $complexType->setAttribute('name', $xmlType);
                    $complexContent = $dom->createElement('xsd:complexContent');
                    $restriction = $dom->createElement('xsd:restriction');
                    $restriction->setAttribute('base', 'soap-enc:Array');
                    $attribute = $dom->createElement('xsd:attribute');
                    $attribute->setAttribute('ref', 'soap-enc:arrayType');
                    $attribute->setAttribute('wsdl:arrayType', substr($xmlType, 0, strlen($xmlType) - 5) . '[]');
                    $restriction->appendChild($attribute);
                    $complexContent->appendChild($restriction);
                    $complexType->appendChild($complexContent);
                }
                else if (is_array($xmlType)) {
                    $complexType->setAttribute('name', $phpType);
                    $all = $dom->createElement('xsd:all');
                    foreach ($xmlType as $name => $type) {
                        $element = $dom->createElement('xsd:element');
                        $element->setAttribute('name', $name);
                        $element->setAttribute('type', $type[0]);
                        $all->appendChild($element);
                    }
                    $complexType->appendChild($all);
                }
                $schema->appendChild($complexType);
                $types->appendChild($schema);
            }
    
            $dom->documentElement->appendChild($types);
        }
    
        /*
         * @param DOMDocument $dom Represents an entire HTML or XML document; serves as the root of the document tree
         */
    
        private function addMessages($dom) {
            foreach ($this->_messages as $name => $message) {
                $element = $dom->createElement('wsdl:message');
                $element->setAttribute('name', $name);
                foreach ($this->_messages[$name] as $partName => $part) {
                    if (is_array($part)) {
                        $partElement = $dom->createElement('wsdl:part');
                        $partElement->setAttribute('name', $partName);
                        $partElement->setAttribute('type', $part[0]);
                        $element->appendChild($partElement);
                    }
                }
                $dom->documentElement->appendChild($element);
            }
        }
    
        /*
         * @param DOMDocument $dom Represents an entire HTML or XML document; serves as the root of the document tree
         */
    
        private function addPortTypes($dom) {
            $portType = $dom->createElement('wsdl:portType');
            $portType->setAttribute('name', $this->serviceName . 'PortType');
            $dom->documentElement->appendChild($portType);
            foreach ($this->_operations as $name => $doc)
                $portType->appendChild($this->createPortElement($dom, $name, $doc));
        }
    
        /*
         * @param DOMDocument $dom Represents an entire HTML or XML document; serves as the root of the document tree
         * @param string $name method name
         * @param string $doc doc
         */
    
        private function createPortElement($dom, $name, $doc) {
            $operation = $dom->createElement('wsdl:operation');
            $operation->setAttribute('name', $name);
    
            $input = $dom->createElement('wsdl:input');
            $input->setAttribute('message', 'tns:' . $name . 'Request');
            $output = $dom->createElement('wsdl:output');
            $output->setAttribute('message', 'tns:' . $name . 'Response');
    
            $operation->appendChild($dom->createElement('wsdl:documentation', $doc));
            $operation->appendChild($input);
            $operation->appendChild($output);
    
            return $operation;
        }
    
        /*
         * @param DOMDocument $dom Represents an entire HTML or XML document; serves as the root of the document tree
         */
    
        private function addBindings($dom) {
            $binding = $dom->createElement('wsdl:binding');
            $binding->setAttribute('name', $this->serviceName . 'Binding');
            $binding->setAttribute('type', 'tns:' . $this->serviceName . 'PortType');
    
            $soapBinding = $dom->createElement('soap:binding');
            $soapBinding->setAttribute('style', 'rpc');
            $soapBinding->setAttribute('transport', 'http://schemas.xmlsoap.org/soap/http');
            $binding->appendChild($soapBinding);
    
            $dom->documentElement->appendChild($binding);
    
            foreach ($this->_operations as $name => $doc)
                $binding->appendChild($this->createOperationElement($dom, $name));
        }
    
        /*
         * @param DOMDocument $dom Represents an entire HTML or XML document; serves as the root of the document tree
         * @param string $name method name
         */
    
        private function createOperationElement($dom, $name) {
            $operation = $dom->createElement('wsdl:operation');
            $operation->setAttribute('name', $name);
            $soapOperation = $dom->createElement('soap:operation');
            $soapOperation->setAttribute('soapAction', $this->namespace . '#' . $name);
            $soapOperation->setAttribute('style', 'rpc');
    
            $input = $dom->createElement('wsdl:input');
            $output = $dom->createElement('wsdl:output');
    
            $soapBody = $dom->createElement('soap:body');
            $soapBody->setAttribute('use', 'encoded');
            $soapBody->setAttribute('namespace', $this->namespace);
            $soapBody->setAttribute('encodingStyle', 'http://schemas.xmlsoap.org/soap/encoding/');
            $input->appendChild($soapBody);
            $output->appendChild(clone $soapBody);
    
            $operation->appendChild($soapOperation);
            $operation->appendChild($input);
            $operation->appendChild($output);
    
            return $operation;
        }
    
        /*
         * @param DOMDocument $dom Represents an entire HTML or XML document; serves as the root of the document tree
         * @param string $serviceUrl Web service URL
         */
    
        private function addService($dom, $serviceUrl) {
            $service = $dom->createElement('wsdl:service');
            $service->setAttribute('name', $this->serviceName . 'Service');
    
            $port = $dom->createElement('wsdl:port');
            $port->setAttribute('name', $this->serviceName . 'Port');
            $port->setAttribute('binding', 'tns:' . $this->serviceName . 'Binding');
    
            $soapAddress = $dom->createElement('soap:address');
            $soapAddress->setAttribute('location', $serviceUrl);
            $port->appendChild($soapAddress);
            $service->appendChild($port);
            $dom->documentElement->appendChild($service);
        }
    
    }

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