php soap wsdl connection error

I have been trying to connect to a web service which I previously had set up using a soap request in PHP, like so:

$client = new SoapClient($this->config->item('WSDL'));
$response = $client->Login(array('email' => $this->input->post('email'), 'password' => $this->input->post('password')));

this worked when the WSDL url ended in asmx?WSDL but now it开发者_如何转开发s a different url ending in .xml and it doesn't work...I keep getting the following error: "PHP Fatal error: Uncaught SoapFault exception: [HTTP] Could not connect to host in..."

Can anyone help me please? It is hurting my head, thanks!

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URL of WSDL can be ended with anything. Try to echo your WSDL URL and load it by browser.

$client = new SoapClient(exit($this->config->item('WSDL')));