Question

I am currently writing an “Edit Account” module. Using jQuery.post(); I can successfully update my database, and I can write to the session variables from the PHP script – however,
when trying to access the Session variable that I just wrote to, the data does not seem to have been updated.

I write to the session like this: $_SESSION['email'] = '[e-mail]'; in my Ajax.php

My jQuery (minified) callback on success:

$.post(...,function(res)
{
  if(res=='success')
  {
    // Alert the new E-Mail, read from the Session!
    alert("<?php echo $_SESSION['email']; ?>"); 
  }
}

However, the alert does not output [e-mail], it outputs whatever the E-Mail was it was when the entire page was loaded. When I refresh the page, the session data has been properly updated.

I do have session_start(); on both index.php (my site) and in Ajax.php

If you need more info please do let me know. 🙂

Answer 1

First of all it should be

alert("<?php echo $_SESSION['email']; ?>");

and secondly $.post is dynamic but <?php echo $_SESSION['email']; ?> is static. It renders once, on load, not everytime you make an .post() so if

$_SESSION['email'] = 'blah'; by the time the page is loaded, the alert will always be alert("blah"); , until you reload the page.

If you want to alert the new session variable you have to make a new ajax request to a php file (ie. return_session.php?key=email ), that will return the new session variable