PHP：SoapClient构造函数很慢（需要3分钟）

Question

I'm new to PHP. After lots of search I managed to somehow use my web service that is created by Java with PHP but the problem is the constructor of SoapClient class is very slow. Here's my PHP code:

<?
require_once('SOAP/Client.php'); 
$url = "http://127.0.0.1:8024/_RS?wsdl";
$sc = new SoapClient($url);
?>

This takes up to 3 minutes some times. I don't know what the problem is. After creating the constructor I could use it in a for loop for 50 times in 1 second so I'm pretty sure that the constructor is the part that is slowing down my code.

What do you think is causing the problem?

Thank you in advance.

PS: More information in my other question: https://stackoverflow.com/questions/5929669/call-a-wsdl-web-service-created-by-java-from-nushphere-phped

PPS: As suggested by AJ, I used XDebug and kcachegrind to analyze the problem. As you can see, I was right. Here's the picture:

Answer 1

I have the same problem. The php SoapClient is very fast with the same webservice deployed on Tomcat. I tried doing a "wget" to see if the headers in the response was different and as the problem is with the WSDL caching the difference I found might be the reason:

With Tomcat:

HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
Content-Type: text/xml;charset=utf-8
Content-Length: 23925
Date: Thu, 08 Mar 2012 23:13:10 GMT
Connection: keep-alive

With Endpoint.publish(...)

HTTP/1.1 200 OK
Content-type: text/xml;charset=utf-8
Content-length: 23837

Now I just need to find out how to force the Endpoint.publish(...) to insert a Server, Date, or Connection-header.

(Edit) I found a solution: The issue is not only with Chunked data but with "Keep-Alive". This can be prevented by setting the header "Connection: Close" in a stream_context. Please see below:

class ImprovedSoapClient extends SoapClient
{
    public function __construct($wsdlLocation)
    {
        parent::__construct(
            $wsdlLocation 
            , array(
                , 'cache_wsdl' => WSDL_CACHE_NONE
                , 'stream_context'=>stream_context_create(
                    array('http'=>
                        array(
                            'protocol_version'=>'1.0'
                            , 'header' => 'Connection: Close'
                        )
                    )
                )
            )
        );
    }
}