将数据从 Ajax 传递到 PHP

Question

Can anyone explain the following script to me. I am trying to pass in $user data value so that I can use $_REQUEST['user'] inside of sort.php but I am having trouble doing so. I know it passes in long URL.

$(function () {
    $('#sorter').submit(function () {
        $.ajax(
            {
            data: 
                {
                    longurl: $('#longurl').val()
                }, 
            url: 'sort.php', 
                complete: function (XMLHttpRequest, textStatus) 
                {
                    $('#longurl').val(XMLHttpRequest.responseText);
                  }
              });
          return false;
      });
  });

I have tried adding something like the marked line inside right after longurl but it hasn't worked?

data: {
    longurl: $('#longurl').val()
    url: '<?php echo $_SESSION[username]; ?>'      ///<------------------
}, 

Any pointers would be very helpful,

Thanks in advance

Answer 1

You do not need to pass the session variable through AJAX. As long as your target script (eg: sort.php) starts the session, session data should be available in that script as well. In your case, I'm thinking that it is also probably more secure.

But to answer your question, if you want to send a variable that would be accessible in a PHP script as $_REQUEST['user'] , you'd do:

$.ajax({
   url: '/url/to/sort.php',
   data: {
       user: 'something',
   },
});

Then in sort.php :

echo $_GET['user']; // something