Develop Reference

Coundown Timer Inside ForEach Loop Php

I am trying to Show a Countdown Timer Inside Foreach loop for every record in PHP Codeigniter Framework, It is basically showing Datediff between current date and mysql database date value as how many days left, Below is my code.Problem is it is showing countdown timer for single record only not for every record i need
<?php foreach ($my_courses as $my_course):
$course_details = $this->crud_model->get_course_by_id($my_course['course_id'])->row_array();
<!-- countdown timer-->
<?php if ($course_details['is_onlineclass']==='Yes'): ?>
<span style="display:inline-block;font-size:12px;font-color:crimson;"><?php
$t=$course_details['live_class_schedule_time'];
//time difference in seconds for coundown timer
$date = new DateTime();
$date2 = new DateTime(date("yy-m-d h:i:s a", $t));
$diff = $date->getTimestamp() - $date2->getTimestamp() ;
echo $diff;
?></span>
<span id="<?echo $my_course['course_id']?>" class="timer" style="font-size:smaller;color:crimson;"></span>
<?php endif; ?>
<script>
var initialTime = <?echo $diff?>;
var seconds = initialTime;
function timer() {
var days = Math.floor(seconds/24/60/60);
var hoursLeft = Math.floor((seconds) - (days*86400));
var hours = Math.floor(hoursLeft/3600);
var minutesLeft = Math.floor((hoursLeft) - (hours*3600));
var minutes = Math.floor(minutesLeft/60);
var remainingSeconds = seconds % 60;
if (remainingSeconds < 10) {
remainingSeconds = "0" + remainingSeconds;
}
document.getElementById('<?echo $my_course['course_id']?>').innerHTML = days + "days " + hours + "hours " + minutes + "min " + remainingSeconds+ "sec left";
if (seconds == 0) {
learInterval(countdownTimer);
document.getElementById('<?echo $my_course['course_id']?>').innerHTML = "Completed";
} else {
seconds--;
}
}
var countdownTimer = setInterval('timer()', 1000);
</script>
What is the wrong I am doing and How to show the timer for every record

Your function name and call should also be unique.
EDIT
Also you messed up a log of code. I have commented the foreach loop and put my own for loop. Modify accordingly
Try this.
<?php
$my_course['course_id'] = 0;
for($i = 0; $i <= 2; $i++):
// foreach ($my_courses as $my_course):
// $course_details = $this->crud_model->get_course_by_id($my_course['course_id'])->row_array();
// You need to comment this out when you put your code live
$course_details['is_onlineclass'] = "Yes";
$course_details['live_class_schedule_time'] = time() + rand(0, 300);
$my_course['course_id'] += 1;
// remove till here
if ($course_details['is_onlineclass']==='Yes'):
?>
<span style="display:inline-block;font-size:12px;font-color:crimson;">
<?php
$t=$course_details['live_class_schedule_time'];
//time difference in seconds for coundown timer
$date = new DateTime();
$date2 = new DateTime(date("yy-m-d h:i:s a", $t));
$diff = $date->getTimestamp() - $date2->getTimestamp() ;
?>
</span>
<span id="<?php echo $my_course['course_id']; ?>" class="timer" style="font-size:smaller;color:crimson;"></span>
<?php endif; ?>
<script>
var initialTime = <?php echo $diff; ?>
var seconds = initialTime;
function timer<?php echo $my_course['course_id'];?>() {
var days = Math.floor(seconds/24/60/60);
var hoursLeft = Math.floor((seconds) - (days*86400));
var hours = Math.floor(hoursLeft/3600);
var minutesLeft = Math.floor((hoursLeft) - (hours*3600));
var minutes = Math.floor(minutesLeft/60);
var remainingSeconds = seconds % 60;
if (remainingSeconds < 10) {
remainingSeconds = "0" + remainingSeconds;
}
document.getElementById('<?php echo $my_course['course_id']?>').innerHTML = days + "days " + hours + "hours " + minutes + "min " + remainingSeconds+ "sec left";
if (seconds == 0) {
learInterval(countdownTimer);
document.getElementById('<?php echo $my_course['course_id']?>').innerHTML = "Completed";
} else {
seconds--;
}
}
var countdownTimer = setInterval('timer<?php echo $my_course["course_id"];?>()', 1000);
</script>
<?php endfor; ?>
EDIT: Here is your code
<?php
foreach ($my_courses as $my_course):
$course_details = $this->crud_model->get_course_by_id($my_course['course_id'])->row_array();
if ($course_details['is_onlineclass']==='Yes'):
?>
<span style="display:inline-block;font-size:12px;font-color:crimson;">
<?php
$t=$course_details['live_class_schedule_time'];
//time difference in seconds for coundown timer
$date = new DateTime();
$date2 = new DateTime(date("yy-m-d h:i:s a", $t));
$diff = $date->getTimestamp() - $date2->getTimestamp() ;
?>
</span>
<span id="<?php echo $my_course['course_id']; ?>" class="timer" style="font-size:smaller;color:crimson;"></span>
<?php endif; ?>
<script>
var initialTime = <?php echo $diff; ?>
var seconds = initialTime;
function timer<?php echo $my_course['course_id'];?>() {
var days = Math.floor(seconds/24/60/60);
var hoursLeft = Math.floor((seconds) - (days*86400));
var hours = Math.floor(hoursLeft/3600);
var minutesLeft = Math.floor((hoursLeft) - (hours*3600));
var minutes = Math.floor(minutesLeft/60);
var remainingSeconds = seconds % 60;
if (remainingSeconds < 10) {
remainingSeconds = "0" + remainingSeconds;
}
document.getElementById('<?php echo $my_course['course_id']?>').innerHTML = days + "days " + hours + "hours " + minutes + "min " + remainingSeconds+ "sec left";
if (seconds == 0) {
learInterval(countdownTimer);
document.getElementById('<?php echo $my_course['course_id']?>').innerHTML = "Completed";
} else {
seconds--;
}
}
var countdownTimer = setInterval('timer<?php echo $my_course["course_id"];?>()', 1000);
</script>
<?php endforeach; ?>

Multiple Countdown using PHP and Javascript

I am currently stuck on a problem and not sure how to solve it. I am new to php and javascript coding so do please correct me if there is an easier way to do this.
My problem is that I am trying to get a countdown timer working for multiple data in mysql database. I have already made a successful countdown time function that only works with one data using the if statement in php, but when I try to do it with multiple data using the while statement in php it doesn't work.here is my php code
//TODAY'S DATE
$today = time();
//FETCHES DATE AND TIME FOR THE EVENT FROM DATABASE
$sql = "SELECT * FROM post";
$result = mysqli_query($conn, $sql);
while ($row = mysqli_fetch_assoc($result)) {
$title = $row['title'];
$cname = $row['cname'];
$team = $row['team'];
$description = $row['description'];
$endtime = $row['endtime'];
echo "<tr>";
echo "<td width='16%'><strong>Title:</strong></td>";
echo "<td width='16%'>$title</td>";
echo "</tr><tr>";
echo "<td width='16%'><strong>Client name:</strong></td>";
echo "<td width='16%'>$cname</td>";
echo "</tr><tr>";
echo "<td width='16%'><strong>Team:</strong></td>";
echo "<td width='16%'>$team</td>";
echo "</tr><tr>";
echo "<td width='16%'><strong>Description:</strong></td>";
echo "<td width='16%'>$description</td>";
echo "</tr><tr>";
echo "<td width='16%'><strong>End time:</strong></td>";
echo "<td width='16%'>$endtime</td>";
echo "</tr><tr>";
echo"</BR>";
echo"</BR>";
}
$conn->close();
below is my javascript that suppose to run the count down
<script language="JavaScript">
var today = new Date();
var DD = today.getDate();
var MM = today.getMonth()+1; //January is 0!
var YYYY = today.getFullYear();
//let get the Difference in Sec btw the two dates
var _DateFromDBProgEndDate = '<?php echo $endtime; ?>';
var ProgEndTime = new Date(_DateFromDBProgEndDate);
var TodayTime = new Date();
var differenceTravel = ProgEndTime.getTime()- TodayTime.getTime() ;
var seconds = Math.floor((differenceTravel) / (1000));
////////////////////////////////
var SecDiffFromToday = seconds;
var seconds = SecDiffFromToday;
function pad(n) {
// utility function to pad a number to 2 digits:
return ('0' + n).substr(-2);
}
function timer() {
var todaySeconds = Math.floor(new Date().getTime() / 1000);
// collect the html first in an array
var html = [];
// keep track whether there are still counters not yet zero:
var allDone = true;
// go through the list of dates:
endDatesInSeconds.forEach(function (endDateSeconds) {
var totalSeconds = endDateSeconds - todaySeconds;
var days = Math.floor(totalSeconds/24/60/60);
var seconds = Math.floor(totalSeconds - days*86400);
var hours = Math.floor(seconds/3600);
seconds = Math.floor(seconds - hours*3600);
var minutes = Math.floor(seconds/60);
seconds = seconds % 60;
// add a part of html
html.push(
totalSeconds <= 0
? 'project time Completed'
: days + ":" + pad(hours) + ":" + pad(minutes) + ":" + pad(seconds));
// when at least one counter is not complete, we are not done:
allDone = allDone && totalSeconds <= 0;
});
// now put the html in the document:
document.getElementById('countdown').innerHTML = html.join('<br/>');
if (allDone) {
clearInterval(countdownTimer);
}
}
var countdownTimer = setInterval('timer()', 1000);
</script>
the javascript run the countdown by getting it value from the php (var _DateFromDBProgEndDate = '<?php echo $endtime; ?>';)

Javascript clock?

I get the GMT time in PHP and I would like to make it count, like the clocks.
<?php $time = gmdate('H:i:s'); ?>
<script>var time = <?php echo($time) ?>;
setInterval(function() {
time += 1;
$("#timediv").text("Current time (GMT): " + time);
//somehow convert it to 11:44:31 AM ??
}, 1000);
</script>
Can seomeon help me?

First of all, relying on setTimeout/setInterval accuracy for displaying time is not a good idea. There are multiple reasons for them not being that accurate, like CPU slowdowns. That's why you should rather use Date object, which uses actual clock.
This is what I do when I want to use my server's time on the client side:
<!-- jQuery -->
<script src="https://code.jquery.com/jquery-2.1.3.min.js"></script>
<!-- dateFormat plugin for nice and easy time formatting -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery-dateFormat/1.0/jquery.dateFormat.min.js"></script>
<script>
var clientTime = (new Date()).getTime(),
serverTime = <?php echo time() ?> * 1000,
difference = clientTime - serverTime;
setInterval(function () {
var now = new Date();
now.setTime(now.getTime() - difference);
$("#timediv").text("Current time (GMT): " + $.format.date(now, "hh:mm:ss a"));
}, 1000);
</script>
The key concept behind it is to calculate the difference between server time and client time. Then, you normalize your client side (created each time with new Date()) with the difference. We are still using setInterval, but even if it's delayed or accelerated for some reason, the time displayed is still correct.

I would not follow motanelu's answer but change it to this:
<script>var time = Date.parse('<?php echo($time) ?>');
setInterval(function() {
time.setSeconds(time.getSeconds() + 1);
$("#timediv").text("Current time (GMT): " + time);
//somehow convert it to 11:44:31 AM ??
}, 1000);
</script>
This creates a Date object which can you can format with for example time.toLocaleTimeString();

Replace
<?php $time = gmdate('H:i:s'); ?>
with
<?php $time = gmdate('h:i:s A'); ?>

Thank you guys, I made it:
PHP:
$time = gmdate('H:i:s');
$time = preg_replace("/^([\d]{1,2})\:([\d]{2})$/", "00:$1:$2", $time);
sscanf($time, "%d:%d:%d", $hours, $minutes, $seconds);
$timeInSeconds = $hours * 3600 + $minutes * 60 + $seconds;
Javascript:
<script>
function fromSeconds(sec){
var d=new Date(0,0,0);
d.setSeconds(+sec);
return (d.getHours() ? d.getHours()+":" : "")+d.getMinutes()+":"+d.getSeconds();
}
var time = <?php echo($timeInSeconds) ?>;
var newTime = 0;
setInterval(function() {
time += 1;
var newTime = fromSeconds(time);
$("#timediv").text("The current GMT time is: " + newTime);
}, 1000);');
?>
</script>

Javascript clock with server time PHP [duplicate]

This question already has answers here:
javascript clock with server time [duplicate]
(4 answers)
Closed 8 years ago.
I struggling with server time. I need timer on my website (count every second) but not client side time but server. But my script operating only with client time:
<script>
setInterval(function() {
var d = new Date();
$('#timer').text((d.getHours() +':' + d.getMinutes() + ':' + d.getSeconds() ));
}, 1000);
</script>
<label id="timer"></label>
Script above work fine.
How I can integrate server time and update very one second?

Get the date from the server, convert it to a javascript date, then increment it yourself.
<?php $today = getdate(); ?>
<script>
var d = new Date(Date.UTC(<?php echo $today['year'].",".$today['mon'].",".$today['mday'].",".$today['hours'].",".$today['minutes'].",".$today['seconds']; ?>));
setInterval(function() {
d.setSeconds(d.getSeconds() + 1);
$('#timer').text((d.getHours() +':' + d.getMinutes() + ':' + d.getSeconds() ));
}, 1000);
</script>
<label id="timer"></label>
EDIT: JSFiddle with example PHP echoed in.

I worked on a code for count down using the server time . You can use something similar to this for your code
<?php
$now = date('d-m-Y');
$end= "01-01-2013"
$date = strtotime($end) - strtotime($now);
$days = date('d', $date);
$monthes= date('m', $date);
$years= date('Y', $date);
?>
<script>
var days = "<?= $days ?>";
var monthes= "<?= $monthes?>";
var years= "<?= $years?>";
document.getElementById('countdown').innerHTML = days+ ' days';
document.getElementById('countdown').innerHTML += monthes+ ' monthes';
document.getElementById('countdown').innerHTML += years+ ' years';
</script>

Getting datetime from mysql into php?

I have the following code (a countdown timer using php and javascript) that I am working on. What I am trying to do is to get the datetime ($end_date) from the mysql and place it in the $date ='' inside my code.
This code will work just fine if i enter the date and time manually in the code like this: $date = 'September 17 2013 12:00:00 PM GMT';
but i need it to work some how like this:
$date = echo $dynamicList;
or like this maybe:
$date = echo $end_date;
I'm not sure what I am doing wrong!
here is my full code:
<?php
error_reporting(E_ALL);
ini_set('display_errors', '1');
?>
<?php date_default_timezone_set('GMT'); ?>
<?php
session_start();
// Run a select query to get my letest 6 items
// Connect to the MySQL database
include "config/connect.php";
$dynamicList = "";
$sql = "SELECT * FROM item ORDER BY id";
$query = mysqli_query($db_conx, $sql);
$productCount = mysqli_num_rows($query); // count the output amount
if ($productCount > 0) {
while($row = mysqli_fetch_array($query, MYSQLI_ASSOC)){
$id = $row["id"];
$product_name = $row["product_name"];
$date_added = strftime("Y-m-d", strtotime($row["date_added"]));
$end_date = strftime("Y-m-d H:i:s", strtotime($row["end_date"]));
$price = $row["price"];
$dynamicList .= '<div>' . $end_date . '
</div>';
}
} else {
$dynamicList = "No Records";
}
?>
<?php
$date = echo $dynamicList;
$exp_date = strtotime($date);
$now = time();
if ($now < $exp_date) {
?>
<script>
// Count down milliseconds = server_end - server_now = client_end - client_now
var server_end = <?php echo $exp_date; ?> * 1000;
var server_now = <?php echo time(); ?> * 1000;
var client_now = new Date().getTime();
var end = server_end - server_now + client_now; // this is the real end time
var _second = 1000;
var _minute = _second * 60;
var _hour = _minute * 60;
var _day = _hour *24
var timer;
function showRemaining()
{
var now = new Date();
var distance = end - now;
if (distance < 0 ) {
clearInterval( timer );
document.getElementById('countdown').innerHTML = 'EXPIRED!';
return;
}
var days = Math.floor(distance / _day);
var hours = Math.floor( (distance % _day ) / _hour );
var minutes = Math.floor( (distance % _hour) / _minute );
var seconds = Math.floor( (distance % _minute) / _second );
var countdown = document.getElementById('countdown');
countdown.innerHTML = '';
if (days) {
countdown.innerHTML += 'Days: ' + days + '<br />';
}
countdown.innerHTML += 'Hours: ' + hours+ '<br />';
countdown.innerHTML += 'Minutes: ' + minutes+ '<br />';
countdown.innerHTML += 'Seconds: ' + seconds+ '<br />';
}
timer = setInterval(showRemaining, 1000);
</script>
<?php
} else {
echo "Times Up";
}
?>
<div id="countdown"></div>
could someone please help me out with this?
I do not get any errors on my page. only a blank page and if I change $date = echo $dynamicList; to $date = '$dynamicList'; i get the Times Up message!
any help would be appreciated.
EDIT My new code:
<?php
error_reporting(E_ALL);
ini_set('display_errors', '1');
?>
<?php date_default_timezone_set('GMT'); ?>
<?php
session_start();
// Run a select query to get my letest 6 items
// Connect to the MySQL database
include "config/connect.php";
$dynamicList = "";
$sql = "SELECT * FROM item ORDER BY id";
$query = mysqli_query($db_conx, $sql);
$productCount = mysqli_num_rows($query); // count the output amount
if ($productCount > 0) {
while($row = mysqli_fetch_array($query, MYSQLI_ASSOC)){
$id = $row["id"];
$product_name = $row["product_name"];
$date_added = strftime("%Y-%m-%d", strtotime($row["date_added"]));
$end_date = strftime("%Y-%m-%d %H:%M:%S", strtotime($row["end_date"]));
$price = $row["price"];
$dynamicList .= '<div>' . $end_date . '
</div>';
}
} else {
$dynamicList = "No Records";
}
?>
<?php
$date = "'".$end_date."'";
$exp_date = strtotime($date);
$now = time();
if ($now < $exp_date) {
?>
<script>
// Count down milliseconds = server_end - server_now = client_end - client_now
var server_end = <?php echo $exp_date; ?> * 1000;
var server_now = <?php echo time(); ?> * 1000;
var client_now = new Date().getTime();
var end = server_end - server_now + client_now; // this is the real end time
var _second = 1000;
var _minute = _second * 60;
var _hour = _minute * 60;
var _day = _hour *24
var timer;
function showRemaining()
{
var now = new Date();
var distance = end - now;
if (distance < 0 ) {
clearInterval( timer );
document.getElementById('countdown').innerHTML = 'EXPIRED!';
return;
}
var days = Math.floor(distance / _day);
var hours = Math.floor( (distance % _day ) / _hour );
var minutes = Math.floor( (distance % _hour) / _minute );
var seconds = Math.floor( (distance % _minute) / _second );
var countdown = document.getElementById('countdown');
countdown.innerHTML = '';
if (days) {
countdown.innerHTML += 'Days: ' + days + '<br />';
}
countdown.innerHTML += 'Hours: ' + hours+ '<br />';
countdown.innerHTML += 'Minutes: ' + minutes+ '<br />';
countdown.innerHTML += 'Seconds: ' + seconds+ '<br />';
}
timer = setInterval(showRemaining, 1000);
</script>
<?php
} else {
echo "Times Up";
}
?>
<div id="countdown"></div>

Change these lines:
$date = echo $dynamicList;
With the following code:
$date = "'".$end_date."'";
And define the $end_date as a global variable.
And also add the some more parameter in the following for timezone:
$end_date = strftime("Y-m-d H:i:s A T", strtotime($row["end_date"]));
^^^ add these
You are getting the timesup message because of your if condition is not correct:
if ($now < $exp_date) {
As you are comparing the unixtimestap with the timeformat.
Use this code:
$date = "'".$end_date."'";
$exp_date = strtotime($date);
$now = strtotime(date("Y-m-d H:i:s A T"));
Then compare these time. You need to change the $now also.