title: How to do header authentication using NuSOAP in PHP?
body: <p>I am using NuSOAP to create a soap API but now I want to the authentication using headers in NuSOAP. I don't want to create any authentication function for that. Please guide me how can I do this using headers?</p>
  
  <p>I have gone through this example:
  <a href="https://stackoverflow.com/questions/23629731/how-to-authenticate-soap-header-in-nusoap-server-in-php">how to authenticate Soap Header in nusoap server in PHP?</a>. My problem is that I am not able to understand how to get the header on server side.</p>