How does php perform third-party login curl? Soap?

The leaders asked for a third-party login. The customer has already given the address. their demo page access address is as follows: www. *********. the comsecuredemo page contains the user name and password. the returned value array of the action "idpAuthnUserPassword" submitted in the form after submission is designed by the user. What should I do to access the client's server on my page? Using soap? Curl? I don't understand. please wait. In addition, I tried using soap with the address www. webservicex. netglobalweather... soapphpcurl.

The leaders asked for a third-party login. Customer
The user has already given the address. their demo page access address is as follows: http: // www. **********. com/secure demo
The user name and password are available on the page. after the form is submitted, the returned value array of action = "idp/Authn/UserPassword" is designed by the user.
What should I do to access the client's server on my page? Using soap? Curl? I don't understand. please wait. In addition, I tried using soap to get the http://www.webservicex.net/globalweather.asmx address? The wsdl test has returned data. For the http: // www. ***********. com/secure of our address, no data is returned. why, what do third-party servers need to be configured? Code is required most ~~~~~~
I don't have any gold coins to offer. Please help new people.