Description:
------------
The built-in SOAP client for PHP 5.2 crashs (SegFault) when trying to parse a WSDL file located on a secure Apache server configuring to support client authentication via X.509v3 certificates.
The same WSDL works fine on an identical build on a Linux and Solaris server with HTTP and HTTPS connections without strong client authentification.

But when the web server is configuring to be limited only to the web browsers that present a valid certificate, PHP SOAP SSL connection crashs.

Reproduce code:
---------------
Here is a working example:
---
$soapClient = new SoapClient( 
 	"https://monserveur/generate_wsdl.php",
	array( 'local_cert'=> "asg-newCert.crt" ) );

The same example but we enable client authentication in the Apache's web server:
---
$soapClient = new SoapClient( 
 	"https://monserveur/wservices/generate_wsdl.php",
	array( 'local_cert'=> "asg-newCert.crt" ) );

To enable the use of client certificates, we need to add the following directives to httpd.conf:

<Location /www/wservices>
SSLVerifyClient require
SSLVerifyDepth  5
SSLCACertificateFile /opt/apache/conf/ssl/ca.pem
SSLOptions           +FakeBasicAuth
SSLRequireSSL
</Location>