Hello Michel, Thank you very much for your help. I've used Firebug to verify that json_encode($tweets) outputs json data. But on another php discussion thread, they suggested to really verify that only json data is being encoded, without spaces before and after the data. So I'm going to go through that investigation today. Thanks again!
Regards, Arnie On Nov 8, 10:44 pm, Michel Belleville <michel.bellevi...@gmail.com> wrote: > Well no, no-store, no-cache, must-revalidate is exactly what you need here. > If you had cache your problem could have been that the cache was keeping a > former result from when you didn't output the result. You should check > wether you get something in the reply, and if not ask yourself why your PHP > script doesn't output anything (my best guess at this point would be that > get_tmmtweets($east, $south, $west, $north, $mood); returns nothing that > json_encode() likes, if anything), though I don't know get_tmmtweets and I > guess I can't help you much here. > > Michel Belleville > > 2009/11/9 ArnieML <arnie.lapi...@gmail.com> > > > I tried echo json_encode($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!
