PHP WebService/Soap接口生成方法。

WSDL方法：

配置: php.ini->;php_soap.all 把前面的；号去掉，开启soap。

准备SoapDiscovery.class.php类(作用：生成WSDL文件)

<?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" ?>
";
        $headerWSDL.= "<definitions name="$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/">
";
        $headerWSDL.= "<types xmlns="http://schemas.xmlsoap.org/wsdl/" />
";

        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">
<soap:binding style="rpc" transport="http://schemas.xmlsoap.org/soap/http" />
";
        $serviceWSDL = '<service name="'.$this->service_name."">
<documentation />
<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']."" />
</port>
</service>
";
        $messageWSDL = '';
        foreach ($methods as $method) {
            if ($method->isPublic() && !$method->isConstructor()) {
                $portTypeWSDL.= '<operation name="'.$method->getName()."">
".'<input message="tns:'.$method->getName()."Request" />
<output message="tns:".$method->getName()."Response" />
</operation>
";
                $bindingWSDL.= '<operation name="'.$method->getName()."">
".'<soap:operation soapAction="urn:'.$this->service_name.'#'.$this->class_name.'#'.$method->getName()."" />
<input><soap:body use="encoded" namespace="urn:$this->service_name" encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" />
</input>
<output>
<soap:body use="encoded" namespace="urn:$this->service_name" encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" />
</output>
</operation>
";
                $messageWSDL.= '<message name="'.$method->getName()."Request">
";
                $parameters = $method->getParameters();
                foreach ($parameters as $parameter) {
                    $messageWSDL.= '<part name="'.$parameter->getName()."" type="xsd:string" />
";
                }
                $messageWSDL.= "</message>
";
                $messageWSDL.= '<message name="'.$method->getName()."Response">
";
                $messageWSDL.= '<part name="'.$method->getName()."" type="xsd:string" />
";
                $messageWSDL.= "</message>
";
            }
        }
        $portTypeWSDL.= "</portType>
";
        $bindingWSDL.= "</binding>
";
        return 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" ?>
<disco:discovery xmlns:disco="http://schemas.xmlsoap.org/disco/" xmlns:scl="http://schemas.xmlsoap.org/disco/scl/">
<scl:contractRef ref="http://".$_SERVER['SERVER_NAME'].':'.$_SERVER['SERVER_PORT'].$_SERVER['PHP_SELF']."?wsdl" />
</disco:discovery>";
    }
}

?>

创建service.php（与SoapDiscovery文件同一个文件夹中）

<?php
class test{
    public function say(){
        return 'Hello World!';
    }
}

$wsdl="test.wsdl"; 
$class="test";
if(!file_exists($wsdl)){//如果WSDL文件不存在,调用类创建
        require_once("SoapDiscovery.class.php");
    $disco = new SoapDiscovery($class,$class);
    $wsdlxmlstr = $disco->getWSDL();
    file_put_contents($wsdl,$wsdlxmlstr);
}
//定义接口 
$SoapServer = new SoapServer($wsdl);
$SoapServer->setClass($class);
$SoapServer->handle();

之后在浏览器上运行service.php，生成WSDL文件。

创建一个模拟PHP客户端Client.php

<?php
$url = "http://127.0.0.1/WebService/service.php?wsdl";

try{
 $client = new SoapClient($url);
    echo $client->say();
}catch(SoapFault $e){
    echo $client->__getLastRequest();
    echo $client->__getLastResponse();
    echo $e->getMessage();
}

Hello World!

线上问题：

　　1.线上需要开启缓存，加速加载。

　　php.ini->soap.wsdl_cache_enabled=1 

　　2.每一次修改远程函数建议删除WSDL文件再生成一次。