Cross Domain Ajax Request with JQuery/PHP

by

The error seems to be a security feature of the Same Origin Policy: to simplify, you can only make AJAX requests for stuff on the originating server (http://foobar.com). One way around this is to make a simple facade on the originating server, e.g.:

 <?php
 // this file resides at http://foobar.com/getstuff.php
 echo file_get_contents('http://www.boobar.com/script.php?callback=?'
          . $possibly_some_other_GET_parameters );
 ?>

Then, from foobar.com, you can make an AJAX request for http://foobar.com/getstuff.php (which in turn makes a HTTP GET request from your web server to boobar.com and sends it back to the browser).

To the browser, the request goes to the origin server, and is allowed (the browser has no way of knowing that the response comes from somewhere else behind the scene).

Caveats:

  • the PHP config at foobar.com must have allow_url_fopen set to “1”. Although this is the default setting, some servers have it disabled.
  • the request to www.boobar.com is made from foobar.com server, not from the browser. That means no cookies or user authentication data are sent to www.boobar.com, just whatever you put into the request URL (“$possibly_some_other_GET_parameters“).

More Related Contents:

  1. How to inject javascript code that uses php variables into php page
  2. How to get the jQuery $.ajax error response text?
  3. Passing JavaScript array to PHP through jQuery $.ajax
  4. Send array with Ajax to PHP script
  5. Creating jQuery AJAX requests to a PHP function
  6. Change DIV content using ajax, php and jQuery
  7. jQuery AJAX form using mail() PHP script sends email, but POST data from HTML form is undefined
  8. How to load PHP file into DIV by jQuery?
  9. Passing Javascript Variable to PHP using Ajax
  10. Jquery – Uncaught TypeError: Cannot use ‘in’ operator to search for ‘324’ in
  11. Pass data from jQuery to PHP for an ajax post
  12. How to pass an array using PHP & Ajax to Javascript?
  13. Jquery: Running AJAX locally without a webserver
  14. How can I pass variables from JavaScript to PHP?
  15. How to rotate image and save the image
  16. show progressbar while loading pages using jquery ajax in single page website
  17. How to implement a chat room using Jquery/PHP?
  18. I want to use jquery nested sortable plugin with drag and drop in codeigniter using mysqli
  19. How do I close a connection early?
  20. jQuery – Call ajax every 10 seconds
  21. Scaling a chat app – short polling vs. long polling (AJAX, PHP)
  22. Redirect with PHP after ajax call
  23. Sending multiple data parameters with jQuery AJAX
  24. Refresh a table with jQuery/Ajax every 5 seconds
  25. How to make a Cascading Drop Down List in PHP using jQuery
  26. AJAX only access
  27. Removing black borders 4:3 on youtube thumbnails
  28. uploading a file via ajax with php
  29. How to submit checkboxes from all pages with jQuery DataTables
  30. How can you use php in a javascript function [duplicate]

Leave a Comment