Empty php variable after ajax post - php

Question

I have the following code in my script file:
$.ajax({
url: "server.php?saveEvent",
data: "myEvent=" + JSON.stringify(myEvent),
dataType: "json",
type: "post",
success: function (data) {
if (data) {
$("#log").append("<br />Evenement saved.");
}
}
});
In server.php I retrieve the variable using:
if (isset($_GET['saveEvent'])) {
if (isset($_POST['myEvent'])) {
$firephp->log(gettype($_POST['myEvent']));
$myEvent = json_decode($_POST['myEvent'], true);
}
}
When I tested this on my localhost, everything went fine. Unfortunately, after deployment,
$myEvent
was empty.
Using firephp, I tested what was in the variable, and I looked at the headers being sent. The object was sent to the server, but still somehow php see's it as being an empty variable.
Any ideas on how this is possible? Is it a php version or json issue?
EDIT: PHP ver= 5.2.17 / json enabled
EDIT2: Changing te url to ?saveEvent=1 didnt change anything
Edit3: I realize making a get and post is a bit strange, I'll try changing that, but get/post shouldn't be a problem I think

Answer 1

Your uri contains a GET parameter, saveEvent. You're checking for POST data only
try checking this: $_GET['saveEvent']
Even so, that parameter hasn't got a value assigned to it, perhaps change the url to ?saveEvent=1.There's also no reason for you to use 2 if statements:
if (isset($_GET['saveEvent'] && isset($_POST['myEvent']))
{
//do stuff
}
Since it seems there's more going on than just the GET vs. POST issue, you might want to add an ampersand (&) at the end of your url: look at your console, the XHR request just pastes the POST parameters at the end of your url, so the uri will look like either one of the following urls:
server.php?saveEvent=truemyEvent=foo
server.php?saveEvent=1myEvent=foo
server.php?saveEventmyEvent=foo
//or
server.php?saveEvent=1?myEvent=foo
Whereas, what you need is:
server.php?saveEvent=1&myEvent=foo&something=else
Basically, stick to 1 method, either POST or GET, and make sure that the various parameters are separated as they're supposed to be separated.I'm not sure if this is the issue, but try var_dump-ing the $_REQUEST super-global, along with $_GET, $_POST and what have you...

Answer 2

Try using an object instead of a string in your data
data: {myEvent:myEvent},

Answer 3

Is the behavior of using just server.php?saveEvent well defined by your server? The behavior of doing that may vary between servers or versions of PHP. What would the PHP variable be set with? It isn't exactly clear using that shorthand, so I would be nervous using isset() like you are. I would use something more ordinary like server.php?saveEvent=true so that you're sure saveEvent is going to be set.