lib/prince.php
public function setAuthMethod($authMethod)
    {
        if(strcasecmp($authMethod, 'basic') == 0)
        {
            $this->authMethod = 'basic';
        }
        else if(strcasecmp($authMethod, 'digest') == 0)
        {
            $this->authMethod = 'digest';
        }
        else if(strcasecmp($authMethod, 'ntlm') == 0)
        {
            $this->authMethod = 'ntlm';
        }
        else if(strcasecmp($authMethod, 'negotiate') == 0)
        {
            $this->authMethod = 'negotiate';
        }
        else
        {
            $this->authMethod = '';
        }
    }
public function setAuthMethod($authMethod)
    {
        if(strcasecmp($authMethod, 'basic') == 0)
        {
            $this->authMethod = 'basic';
        }
        else if(strcasecmp($authMethod, 'digest') == 0)
        {
            $this->authMethod = 'digest';
        }
        else if(strcasecmp($authMethod, 'ntlm') == 0)
        {
            $this->authMethod = 'ntlm';
        }
        else if(strcasecmp($authMethod, 'negotiate') == 0)
        {
            $this->authMethod = 'negotiate';
        }
        else
        {
            $this->authMethod = '';
        }
    }
Specify HTTP authentication methods. (basic, digest, ntlm, negotiate)