How do i make it so that once the countdown timers reach 0 a PHP file is executed that for example deletes a database?
timer.php
<?php
date_default_timezone_set('America/Los_Angeles');
$rawDateStart = date('F j, Y H:i:s', date_timestamp_get(DateTime::createFromFormat('F j, Y H:i:s', 'January 7, 2016 07:00:00')));
$rawDateCurrent = date('F j, Y H:i:s');
?>
<script>
var printSeconds, printMinutes, printHoursDaily, printHoursWeekly, printDays;
// Get strating and current date
var startDate = new Date("<? echo $rawDateStart; ?>");
var currentDate = new Date("<? echo $rawDateCurrent; ?>");
$(function(){
function calculateTime()
{
// Increment current time
currentDate.setSeconds(currentDate.getSeconds() + 1);
// Calcualte time passed since the start
var timePassed = currentDate.getTime() - startDate.getTime();
var secondsSinceStart = Math.floor(timePassed / 1000 );
var minutesSinceStart = Math.floor(secondsSinceStart / 60);
var hoursSinceStart = Math.floor(minutesSinceStart / 60);
var daysSinceStart = Math.floor(hoursSinceStart / 24);
// Calculate time since last daily (18h) reset
var dailySecondsElapsed = secondsSinceStart % 60;
var dailyMinutesElapsed = minutesSinceStart % 60;
var dailyHoursElapsed = hoursSinceStart % 18;
// Calculate time since last weekly (7d) reset
var weeklyHoursElapsed = hoursSinceStart % 24;
var weeklyDaysElapsed = daysSinceStart % 7;
// Calculate remaining time until next daily (18h) reset
var remainingSeconds = 59 - dailySecondsElapsed;
var remainingMinutes = 59 - dailyMinutesElapsed;
var remainingHoursDaily = 17 - dailyHoursElapsed;
// Calculate remaining time until next weekly (7d) reset
var remainingHoursWeekly = 23 - weeklyHoursElapsed;
var remainingDays = 6 - weeklyDaysElapsed;
// If any of the variables is only a single digit number, then add 0 before
printSeconds = (remainingSeconds > 9) ? remainingSeconds : '0' + remainingSeconds;
printMinutes = (remainingMinutes > 9) ? remainingMinutes : '0' + remainingMinutes;
printHoursDaily = (remainingHoursDaily > 9) ? remainingHoursDaily : '0' + remainingHoursDaily;
printHoursWeekly = (remainingHoursWeekly > 9) ? remainingHoursWeekly : '0' + remainingHoursWeekly;
printDays = (remainingDays > 9) ? remainingDays : '0' + remainingDays;
}
setInterval(function() {
calculateTime();
// Print
jQuery('#daily p').html(printHoursDaily+':'+printMinutes+':'+printSeconds)
jQuery('#weekly p').html(printDays+':'+printHoursWeekly+':'+printMinutes+':'+printSeconds)
}, 1000);
});
</script>
<div id="daily"><p ></p></div>
<div id="weekly"><p ></p></div>
</bod