如何将会话数据存储到php文件

I have website which gives points when they click on name will be redirected to the linked webpage.These names are stored in my MySQL database. I have used following point system to give point (only 1 point)

<a href="" id="stack-overflow">www.stackoverflow.com</a>
Now in your js file:
$('#stack-overflow').on('click', function() {
count = 1 
  //send a ajax
$.ajax({
  url:'usersdb.php',
  type:'GET'
  dataType: 'json'
  data: {
   points: count,
      },
  success: function(resp){
  $('#stack-overflow').href='www.stackoverflow.com';
  //now triggered this link
  $('#stack-overflow').click();
  //or what ever msg you want to display
  });
  });

I have 2 field in MySQL database 1) url 2) name i want to display randomly name and link it to url and display it on database only once and give one point.My signup information are kept in userdb.php. I want to store this point and display it again

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