Possible to pass a variable from jQuery with AJAX to PHP page and a session variable? [duplicate]

开发者_如何学运维This question already has answers here: Closed 11 years ago.

Possible Duplicate:

Passing javascript variable to PHP

Hi

I wonder if it's possible to pass a variable from a jQuery script to a PHP-page and put the variable into a session variable like this:

$_SESSION['mapZoomArea'] = (isset($_GET['mapza']) ? $_GET['mapza'] : "";

I'm not sure how to pass the variable and the url to the server? Preciate some help!

Thanks!

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If you want a dedicated service specifically for writing this value into the session, you probably should make it a POST request (GET will work too, but GET requests should be for data retrieval, not for writing to the server).

Therefore, simply create a new PHP page, let's say "storezoomarea.php", and have jQuery make an Ajax POST request to that page:

$.ajax({url: "storezoomarea.php", type: "post", data: {"mapza": mapza}})

Then, on the server side, you can retrieve it from the _POST variable:

$_SESSION['mapZoomArea'] = (isset($_POST['mapza']) ? $_POST['mapza'] : "";

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Not bad. Make sure you've called session_start(); first. Pass the variable in as a query string, 'http://whatever.com/?mapza=yourvariablevaluehere'. You can do this with jQuery by:

$.ajax({
    url : 'urlhere',
    data : { mapza : 'your variable value here' }
});

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Ok.

Yes, you can pass that var to a php code, if you make an AJAX call, with jquery ($.Ajax(whatever)), and of course, in the file called with AJAX change the session var.

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Hi you should use AJAX. Since you have JQuery available it is very simple.

More reading available here http://api.jquery.com/jQuery.ajax/

Example:

$.ajax({
   type: "GET",
   url: "some.php",
   data: ({'mapza' : yourvariable}),
   success: function(msg){
     alert( "Data Saved: " + msg );
   }
 });

HTH :)