I tried echo json_encode($tweets); and still no callback function. The XMLhttp response header looks like this:
Date Mon, 09 Nov 2009 00:57:25 GMT Content-Type text/html Connection close Server Apache X-Powered-By PHP/5.2.1 Expires Thu, 19 Nov 1981 08:52:00 GMT Cache-Control no-store, no-cache, must-revalidate, post-check=0, pre- check=0 Pragma no-cache Content-Length 20283 Is the Cache-Control setting of no-store, no-cache a possible problem? Regards, Arnie On Nov 8, 11:14 am, Michel Belleville <michel.bellevi...@gmail.com> wrote: > Well the doc suggests > <http://php.net/manual/fr/function.json-encode.php>that json_encode > doesn't change the variable passed as a parameter but > returns the encoded string so you've got to do something like this : > echo json_encode($tweets); > > To get a jason encoded serialisation of your data output in the response and > not : > json_encode($tweets); > echo $tweets; > > Which would only output $tweets not encoded. > > Though if it doesn't work like I tell you, you'd better worry about > something else and I don't know exactly what at this point. > > Michel Belleville > > 2009/11/8 ArnieML <arnie.lapi...@gmail.com> > > > Hi Michel, > > > I added the following statement after json encoding: > > > echo $tweets; > > > to the PHP, but the callback function still isn't getting called. > > > Any other ideas? > > > Thanks for the help. > > > On Nov 7, 11:20 pm, Michel Belleville <michel.bellevi...@gmail.com> > > wrote: > > > It's been a long time since my last PHP days but shouldn't you echo or > > print > > > something to get it sent ? It seems you'd get an empty response here > > (unless > > > json_encode already outputs the answer to the response). And as you > > expect > > > at least a bit of json to run through and output parts of, your callback > > may > > > be called but not do anything about the empty response. > > > > Hope it helps. > > > > Michel Belleville > > > > 2009/11/8 ArnieML <arnie.lapi...@gmail.com> > > > > > Hello, I hope someone can help. I'm issuing the following ajax jquery > > > > call: > > > > > $.get("/ajaxtest.php", { ajax: "true", east: northEast.lng(), > > west: > > > > southWest.lng(), north: northEast.lat(), south: southWest.lat(), mood: > > > > amood }, > > > > function (data) { > > > > for(var i=0; i<data.length; i++){ > > > > alert("now processing tweets"); > > > > display_tmmmarker(map, data[i], i); > > > > } > > > > $("#gettingtweets").remove(); > > > > > }, 'json'); > > > > > The PHP page looks like this: > > > > > if ( $_REQUEST['ajax'] == 'true' ) { > > > > $east = $_REQUEST['east']; > > > > $south = $_REQUEST['south']; > > > > $west = $_REQUEST['west']; > > > > $north = $_REQUEST['north']; > > > > $mood = $_REQUEST['mood']; > > > > > $tweets = get_tmmtweets($east, $south, $west, $north, $mood); > > > > > json_encode($tweets); > > > > } > > > > exit; > > > > > I have verified that the $tweets array has been JSON-encoded using > > > > array_values. But the callback function isn't being invoked. I put in > > > > an alert statement in the callback to verify if the function has been > > > > called, but I'm not getting the alert message. Is the $tweets array > > > > not being passed on for some reason? > > > > > Can someone help out? Thanks very much!
