Adding different hyperlink yo php fullcalendar master plugin - php

Question

Differs to the full calendar master database, I added a column called "link" in the event table of the database. My purpose is to allow users to go to different links when they click corresponding day.
I observe other posts/ documentation, still cannot figure out the solution.
Can someone help me?Below is the code of event.php and my js part in the index.html. I do not change any part of other files of the plugin
$json = array();
$request = "SELECT * FROM events ORDER BY id";
try {
$bdd = new PDO('mysql:host=localhost;dbname=test', 'root', '');
} catch (Exception $e) {
exit('Unable to connect to database.');
}
$result = $bdd->query($request) or die(print_r($bdd->errorInfo()));
echo json_encode($result->fetchAll(PDO::FETCH_ASSOC));
$(document).ready(function() {
function fmt(date) {
return date.format("YYYY-MM-DD HH:mm");
}
var date = new Date();
var d = date.getDate();
var m = date.getMonth();
var y = date.getFullYear();
var calendar = $('#calendar').fullCalendar({
editable: true,
header: {
left: 'prev,next',
center: 'title',
right: '',
},
events: "events.php",
eventRender: function(event, element, view) {
if (event.allDay === 'true') {
event.allDay = true;
} else {
event.allDay = false;
}
},
selectable: true,
selectHelper: true,
editable: true,
select: function(start, end, jsEvent, view) {
window.location = "I need different links fetched from db!!"
},
});
});