Put a $_SESSION var in javascript?

[lynxus]

Hi guys,

I have a Ajax request like below, However i want it to send a PHP var .

How can i do this?

 

Below is a quick thing showing the php var.

Further down i sthe Javascript var i want to populate with the php value.

 

var siteid = ( THIS IS WHERE I WANT TO INSERT THE PHP SESSION VALUE )

 

How do i do this?

 

Ive tried doing inline php but that seems to fail , Im assuming because its between script tags..

 

Humm i suppose i could use php to echo the entire script with teh values included?

Whats the *best way to do this?

 

<?
$_SESSION['siteid'] = "1234";
?>

<script language="javascript" type="text/javascript">
<!--
function getdata() {


  var ajaxRequest;
  try {
    // Opera 8.0+, Firefox, Safari
    ajaxRequest = new XMLHttpRequest();
  } catch (e) {
    // Internet Explorer Browsers
    try {
      ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
    } catch (e) {
      try {
        ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
      } catch (e) {
        // Something went wrong
        alert("Your browser broke!");
        return false;
      }
    }
  }
  // Create a function that will receive data sent from the server
  ajaxRequest.onreadystatechange = function() {
    if(ajaxRequest.readyState == 4) {
      var ajaxDisplay = document.getElementById('sessions');
      var result = ajaxRequest.responseText;
          ajaxDisplay.innerHTML = result;
    }
  }

        var nocache = Math.random();

var siteid = ( THIS IS WHERE I WANT TO INSERT THE PHP SESSION VALUE )

        var queryString = "?siteid=" + siteid ;

        ajaxRequest.open("GET", "agetdata.php" + queryString, true);

	 ajaxRequest.send(null);



}

//-->
</script>

 

 

 

 

Thanks

G

[akitchin]

1. use code tags please, as it makes everyone's lives easier and inhibits ocular bleeding.

 

2. you can echo a PHP variable into javascript:

 

var siteid = <?php echo $_SESSION['siteid']; ?>

[lynxus]

Hi, sorry

 

Yeah i thought i could, however i tried and could see it in the HTML source, but the code failed

 

Hummmm

Ty for the idea.

[Philip]

• Make sure to use full tags (<?php ) instead of short tags (<? <?= )
  
• Make sure to have session_start(); at the very tip top of your script

[lynxus]

Yeah i tried:

 

	 
        var nocache = Math.random();
	var siteid = "<?php echo $_SESSION['siteid']; ?>";
        var queryString = "?siteid=" + siteid;

        ajaxRequest.open("GET", "agetdata.php" + queryString, true);

	 ajaxRequest.send(null);

 

But this doesnt work.

Nothing happens when the JS is run.

However if i put the whole lot in PHP and echo the script with the bits i want it works.

 

Looking at the source , BOTH html outputs are the same.

[Philip]

• Make sure to have session_start(); at the very tip top of your script

 

Also, above that put

error_reporting(E_ALL);

[lynxus]

ok, done that.

 

No errors show.

 

Its getting the data fine as on a show source of the page it shows its inserted the code to the javascript correctly.

However it doesnt seem to run if i do it this way..

 

Hmmmmmmmmmmmmmmmmmmmmmm

[lynxus]

even doing:

 

      var nocache = Math.random();
	<?php
	echo 'var siteid = "'.$_SESSION['siteid'].'";';
	?>

        var queryString = "?siteid=" + siteid;

 

Doesnt work.

 

Heres a copy of the actualy output into the html source:

 

        var nocache = Math.random();
	var siteid = "1234567890";
        var queryString = "?siteid=" + siteid;

[lynxus]

Humm,

Ive given up and decided to just echo the entire javascript function with the bits i want in it.

 

This seems to work.

 

Doesnt look like it likes having <?php ?> inside of the <script> tags.

 

So i just echo the entire script built with teh vars included.

[Ken2k7]

Does the file have a PHP extension on it?

[akitchin]

Does the file have a PHP extension on it?

 

that would be a yes, of course, because he does in fact see the siteid in the source code. it's just not passing through the rest of the JS function properly.

 

lynx, have you tried alert()ing the value of the querystring to see if it contains what it should? i know you've given up, but we might as well try and sort this out because there's no use forcing PHP to echo it all if you don't have to.

[lynxus]

Yeah.

 

PHP works fine on the file.

At the moment i have  php section echoing the entire javascript bit, with the vars i want in it.

Cant seem to get inline PHP to work , so this is the only option i have at the mo.

 

[lynxus]

hat would be a yes, of course, because he does in fact see the siteid in the source code. it's just not passing through the rest of the JS function properly.

 

lynx, have you tried alert()ing the value of the querystring to see if it contains what it should? i know you've given up, but we might as well try and sort this out because there's no use forcing PHP to echo it all if you don't have to.

 

 

Ill give that a try .

[Ken2k7]

Sorry about that. So in what way is it not working. Does the AJAX work if you just inline the value "1234567890" into siteid instead of using PHP like so -

var siteid = "1234567890";

 

Does the AJAX work? If not, maybe it's your agetdata.php that you should be looking at.