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Web Service Example
Any application can have a Web Service component.
The creation of a Web Service is independent of the programming language used.
In this section, we will introduce how to create a Web Service using PHP's SOAP extension.
SOAP has two operation modes: NO-WSDL and WSDL.
- NO-WSDL mode: Uses parameters to pass the required information.
- WSDL mode: Uses a WSDL filename as a parameter and extracts the necessary service information from the WSDL.
An Example: PHP Web Service
Before starting the example, we need to confirm whether the SOAP extension is installed in PHP. Check phpinfo; if you see the following information, it means the SOAP extension is already installed:
In this example, we will use PHP SOAP to create a simple Web Service.
Server-side Server.php file code is as follows:
"http://localhost/soap/Server.php","uri"=>"Server.php")); // Export all functions from SiteInfo class $s->setClass("SiteInfo"); // Process a SOAP request, call necessary functions, and send back a response. $s->handle(); ?>Client-side Client.php file code is as follows:
"http://localhost/soap/Server.php",'uri'=>'Server.php')); // Call functions $result1 = $soap->getName(); $result2 = $soap->__soapCall("getUrl",array()); echo $result1.""; echo $result2; } catch(SoapFault $e){ echo $e->getMessage(); }catch(Exception $e){ echo $e->getMessage(); } ?>
Now, when we visit http://localhost/soap/Client.php, the output will be as shown below: