Javascript Countdown Timer, PHP Countdown Timer, Countdown to Date

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    AITpro Admin
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    This javascript and PHP Countdown Timer script works by subtracting the difference of the UNIX timestamp of a future date/time to the UNIX timestamp of the current date/time.  The UNIX timestamp for the futureTime javascript var is generated/created in PHP using user input in a Form text box and uses this math for the variable:  Example for 1 hour in the future: $future_time = time() + (60 * 60);  60 minutes times 60 seconds = 1 hour in the future in UNIX time.  When the Countdown Timer reaches 0 a simple PHP email function bps_send_mmode_email_alert(); is executed/run and an email reminder is sent to the user to remind them that the Countdown Timer has completed.  Another reminder email is sent each time a visitor visits the site since the condition matches to send an email if (secondFloor <= 0 && minuteFloor <= 0) {

    var currentTime = new Date().getTime() / 1000;
    
    var futureTime = <?php echo $future_time; ?>;
    
    var timeRemaining = futureTime - currentTime;

    Screenshots of javascript/php Countdown Timer | Other Examples: Maintenance Mode Guide
    Maintenance Mode CSS Moz Box Maintenance Mode Embed YouTube Video

    To get all the “moving parts” (both PHP and javascript code) and the code nicely formatted download the BPS WordPress plugin from WordPress.org here:  https://wordpress.org/plugins/bulletproof-security/ and unzip it on your computer.  These files below comprise all of the essential “moving parts” involved in creating and generating the php/javascript countdown timer.

    The PHP Form code is in this php file:  bulletproof-security/admin/maintenance/maintenance.php
    The PHP variable values (UNIX future date timestamp) that are called using an include are in this php file:  bulletproof-security/admin/htaccess/bps-maintenance-values.php
    The javascript countdown timer code (shown below) is in this php file:  bulletproof-security/admin/htaccess/bps-maintenance.php

    IMPORTANT NOTE:  Your HTML element in your template/page/file `

    ` is where the javascript Countdown Timer is displayed/outputted.

    <script type="text/javascript">
    /***********************************************************************************************************/
    /* Feel free to use this Countdown Timer code.                                                             */
    /* Please leave this Kudos here if you use this code.                                                      */
    /* Kudos: Ed @ AIT-pro.com                                                                                 */
    /* https://forum.ait-pro.com/forums/topic/javascript-countdown-timer-php-countdown-timer-countdown-to-date/ */
    /***********************************************************************************************************/
    /* <![CDATA[ */
    var MMode = setInterval(function(){ MModeTimer() }, 1000);
    
    function MModeTimer() {
    
    var currentTime = new Date().getTime() / 1000;
    var futureTime = <?php echo $bps_maint_time; ?>;
    var timeRemaining = futureTime - currentTime;
    var minute = 60;
    var hour = 60 * 60;
    var day = 60 * 60 * 24;
    var dayFloor = Math.floor(timeRemaining / day);
    var hourFloor = Math.floor((timeRemaining - dayFloor * day) / hour);
    var minuteFloor = Math.floor((timeRemaining - dayFloor * day - hourFloor * hour) / minute);
    var secondFloor = Math.floor((timeRemaining - dayFloor * day - hourFloor * hour - minuteFloor * minute));
    var countdownCompleted = "<?php bps_send_mmode_email_alert(); ?>";
    
    if (secondFloor <= 0 && minuteFloor <= 0) {
    window.location.reload(true);
    clearInterval(MModeTimer);
    document.getElementById("bpscountdowntimer").innerHTML = countdownCompleted;
    
    } else {
    
    if (futureTime > currentTime) {
    document.getElementById("bpscountdowntimer").innerHTML = dayFloor + " Days " + hourFloor + " Hours " + minuteFloor + " Minutes " + secondFloor + " Seconds ";
    }
    }
    }
    /* ]]> */
    </script>
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