As a developer, if you want to write a webservice interface or call someone else's webservice interface, you first need to understand what a webservice is. Simply put, WebService is some websites that open some services, or they can be services developed by yourself, that is, some methods. Through the URL, specify a certain method name, issue a request, and receive your request, and do some processing based on the passed parameters, and then return the processed results to you in XML form. Your program parses the XML data, then displays it or does other operations.
When writing a webservice, you need to know: the basic Web Services platform is XML + HTTP; in addition, elements of the Web services platform: SOAP (simple object access protocol), UDDI (general description, discovery and integration), and WSDL (Web services description language); any webservice includes the client and the server. Here is an example to explain how to write a webservice interface using php and let others call it:
First, you need to create a .wsdl file, so how to create this file in PHP. There are two ways to achieve it. One is to directly use the Zend Studio tool to generate it; the other is to automatically generate WSDL files based on php; which one is selected according to your own situation. I generally use the former, which is faster. Let’s write about how to generate a wsdl file using a class. First, you need to download the class file online, and then after introducing the class file, see the following code:
creat_wsdl.php
include_once('');
include_once('');
$wsdl=new SoapDiscovery('Service','soap');//The first parameter is the class name, which is also the file name that generates wsdl. The second parameter is the name of the service.
$wsdl->getWSDL();
?>
In this way, you can generate the wsdl file by running the creat_wsdl.php file. Isn't it very simple
Any webservice needs to be bound to an implementation class. In other words, the wsdl file called by others is actually the real function of implementing the methods in the class; the following code is the server-side class file
class Service
{
public function Hello()
{
echo 'hello good';
}
public function Add($a,$b)
{
return $a+$b;
}
}
$server=SoapServer('',array('soap_version'=>soap_1_2));
$server->setClass('Service');//All methods to register Service class
$server->handle();//handle request
?>
After writing the server and wsdl files, the client needs to call it. Please see the client calling code:
ini_set('soap.wsdl_cache_enabled','0');//Close cache
$soap=new SoapClient('http://127.0.0.1/soap/?wsdl');
echo $soap->Add(1,2);
//echo $soap->_soapCall('Add',array(1,2))// Or this is also possible
?>
This is a complete example code for writing webservice interface and calls, hoping it will be helpful to the required phper;
Then calling other people's webservice interface is called like this.