How can I send a SOAP massage using PHP? : I want to send a SOAP massage using SOAP client. I have a WSDL file for an example. I can use the WSDL file using SOAP UI. 

But my requirement is: whenever I am sending a SOAP massage to a particular device or somewhere else a massage ID should be generated to me for each and every massage.

How can I write that SOAP Request using PHP.

Any example/links much appreciated as I am very new to this.