# Checking date & time in PHP

Goal: To create a countdown to our next available live stream.

Details: We live stream six times a week all (PST). 1. Sunday at 8:00 a.m. 2. Sunday at 10:00 a.m. 3. Sunday at 12:00 p.m. 4. Sunday at 6:30 p.m. 5. Wednesday at 7:00 p.m. 6. Saturday at 10:00 a.m.

My approach: I check what day it is and what time it is then create the countdown to the next stream.

I'm sure what I have done can be cleaned up and improved, so tell me how.

<?php
// Countdown Stuff
$year = date(Y);$month = date(m);
$month_day = date(d);$day = date(w);
$hour = date(G);$min = date(i);
$addDay = 0; // It's Sunday if ($day == 0 ) {
if ( $hour < 8 ) {$hour = 8;
$min = 0; } else if ($hour < 10 ) {
$hour = 10;$min = 0;
}
else if ( $hour < 12 ) {$hour = 12;
$min = 0; } else if ($hour <= 18 && $min < 30 ) {$hour = 18;
$min = 30; } else {$addDay = 3;
$hour = 19;$min = 0;
}
}
// It's Monday
else if ( $day == 1 ) {$addDay = 2;
$hour = 19;$min = 0;
}
// It's Tuesday
else if ( $day == 2 ) {$addDay = 1;
$hour = 19;$min = 0;
}
// It's Wednesday
else if ( $day == 3) { if ($hour < 19 ) {
$hour = 19;$min = 0;
} else {
$addDay = 3;$hour = 10;
$min = 0; } } // It's Thursday else if ($day == 4 ) {
$addDay = 2;$hour = 10;
$min = 0; } // It's Friday else if ($day == 5 ) {
$addDay = 1;$hour = 10;
$min = 0; } // All that's left is Saturday else { if ($hour < 10 ) {
$hour = 10;$min = 0;
} else {
$addDay = 1;$hour = 8;
$min = 0; } }$build_date = $year . '-' .$month . '-' . $month_day . ' ' .$hour . ':' . $min . ':00';$date = new DateTime($build_date); if ($addDay ) {
$date->modify("+$addDay day");
}

$date = strtotime($date->format("Y-m-d G:i:s"));
$now = strtotime("now");$count = $date -$now;
?>

<script type="text/javascript">
var myTime = <?=$count?>;$('#countdown').countdown({ until: myTime});
</script>


<?php

$schedule = array( 'this Sunday 8am', 'this Sunday 10am', 'this Sunday 12pm', 'this Sunday 6:30pm', 'this Wednesday 7pm', 'this Saturday 10am' );$current_time = strtotime('now');
foreach ($schedule as &$val) {
$val = strtotime($val);
// fix schedule to next week if time resolved to the past
if ($val -$current_time < 0) $val += 604800; } sort($schedule);
$countdown =$schedule - $current_time; ?> <script type="text/javascript"> var myTime = <?php echo$countdown; // just personally prefer full tags ?>;
$('#countdown').countdown({ until: myTime}); </script>  To add to visionary-software-solutions' answer, it would be best to store the schedule in a database or a separate xml/text/json/etc type file. This way, you can have staff simply use an internal webform to change schedules instead of having the PHP dev hard-code the changes every time. In that webpage, you can allow staff to only select a weekday and time, and have the page translate that into a string usable by strtotime() in this countdown script. Edit: fixed strtotime() values. Careful with "this day" vs "next". For some insight into what type of strings strtotime() can take, see: http://www.gnu.org/software/tar/manual/html_node/Date-input-formats.html I don't have time to look over everything, but I noticed you only set $min to something other than 0 once. You could add the following above $build_date, and then remove all the $min = 0;s, and you'd clear up a few lines:

if($min == date('i')) {$min = 0;
}


If it didn't change, which would only happen when you set it to 30 in that one instance, then set it to 0.

A few things that jumped out.

In your date() calls you are passing constants instead of strings e.g. you use date(Y) as opposed to date('Y'), this issues a notice error. PHP will assume that you meant a string, but it is best to be explicit.

The getdate() function will gives you all that information instead of calling date() 6 times.

For what you are wanting to do, I would recommend taking a look at the mktime() function. Once you calculate the next live stream time from your current time, simply pass those values to mktime() and do a time() - mktime() and thats how many seconds you have until the event. mktime produces a UNIX timestamp, so you can pass that to the date() function or into a DateTime object to format, change timezone, etc.

If you are going to have a lot of if/elseif statements like that, it would be cleaner to use a switch statement.

Of course, now if your company decides to change streams from Sunday at 8:00am to Tuesday at 2, you're going to have to go in and hack this code. And if you mess up a ';' or '?php' or junior developer passes "NO WAY" to strtotime()?

Evolve your approach. You should be storing the stream times externally; either in a file or a database. You should be querying those times, doing a strtotime() difference between them and now, then taking the minimum positive element and displaying that.