title: Jquery AJAX post to PHP
body: <p>OK i've got my json string built but i'm not sure what to do next??</p>
  
  <pre><code>$('#submit').live('click',function(){ 
  
                  var dataString = '[';
                      $('#items tr').not(':first').each(function(){
                          var index = $('#items tr').index(this);
                          var supp_short_code=$(this).closest('tr').find('.supp_short_code').text();
                          var project_ref=$(this).closest('tr').find('.project_ref').text();
                          var om_part_no=$(this).closest('tr').find('.om_part_no').text();
                          var description=$(this).closest('tr').find('.description').text();
                          var cost_of_items=$(this).closest('tr').find('.cost_of_items').text();
                          var cost_total=$(this).closest('tr').find('.cost_total').text();
                          dataString += '{"row":"' + index + '", "supp_short_code":"' + supp_short_code + '", "project_ref":"' + project_ref + '", "om_part_no":"' + om_part_no + '", "description":"' + description + '", "cost_of_items":"' + cost_of_items + '", "cost_total_td":"' + cost_total + '"}';
                      });
                      dataString += ']';
  
                  $.ajax
                      ({
                      type: "POST",
                      url: "order.php",
                      data: dataString,
                      cache: false,
                      success: function()
                          {
                              alert("Order Submitted");
                          }
                      });
              });
  </code></pre>
  
  <p>In my php file i was attempting to write the dataString to a text file so i could see its coming through ok but nothing was in the text file!? Am i doing something wrong client side or PHP side, my php code:</p>
  
  <pre><code>&lt;?php
      $stringData = $_POST['dataString']; 
      $myFile = "testFile.txt";
      $fh = fopen($myFile, 'w') or die("can't open file");
      fwrite($fh, $stringData);
      fclose($fh);
  ?&gt;
  </code></pre>