Datepicker Unavailable dates (data retrieved from database)

Datepicker Unavailable dates (data retrieved from database)

I'm trying to get dates from my database and put them in an array where it
would be stored in json.
MAIN.PHP
$('#datepicker').focus(function(){
$.ajax({
url: 'getDates.php',
data: "artist_name="+$('#name').html(),
dataType: 'json',
success: function(data)
{
}
});
})
getDates.php
$fullname = $_GET['artist_name'];
$result = mysql_query("SELECT .... FROM .... WHERE ... ='$fullname'")
$arraydates = array();
while($details = mysql_fetch_assoc($result)) {
array_push($arraydates, $details['event_date']);
}
echo json_encode($arraydates);
I've managed to put all the dates from the selected artist in the
"arraydates".
I found this on google:
var unavailableDates = ["21-8-2013"];
function unavailable(date) {
dmy = date.getDate() + "-" + (date.getMonth() + 1) + "-" +
date.getFullYear();
if ($.inArray(dmy, unavailableDates) == -1) {
return [true, ""];
} else {
return [false, "", "Unavailable"];
}
}
That's fine. But now I'm trying to get the results from the array (within
getDates.php) and use them in the "main.php". So basically I want to use
the data like above with "unavailableDates" array. (and thus, disable the
specific dates within the jquery date picker).
I'm not really good with json, actually it's my first time I used json. So
could anyone please help me with that?