This is not a duplicate question, but involves a little understanding about time.
I need a solution to the following problem
I have a number of specifically produced times (based on a date), that need to be rounded to the nearest 15 secs:
60 secs is 1 minute
meaning a regular round, floor, ceiling is to the nearest decimal (10/5)
which doesn't help me with time.
also since I'm dealing with secs, it could be that 59:59 will be rounded up to the nearest hour: e.g. 17:59:59 should be 18:00.
example:
6:17:29 rounded to 6:17:30
6:29:55 rounded to 6:30:00
20:45:34 rounded to 20:45:30
The following code does some of the job:
$hr = date('H',($resultStr));
$mn = date('i',($resultStr));
$sc = date('s',($resultStr));
$tot = ($hr * 60 * 60) + ($mn * 60) + $sc;
$totd = $tot / (60);
$totc = ceil($totd);
$totc = $totc / 60;
$hr = floor($totc);
$mn = ($totc - $hr)*60;
$mnflr = floor($mn);
$mn2 = $mn - $mnflr;
echo "$hr:$mnflr";
This results in:
18:35:17 rounded to: 18:36 (which is wrong)
18:31:49 rounded to: 18:32 (which is wrong)
As an aside:
$secs = date('U',($resultStr));
$round = ceil ( (($secs / 60 ) * 60 ));
$newtime = date('H:i:s',($round));
produces: 18:42:58 rounded to: 18:42:58 which is also incorrect
Please and thank you in advance....
You're massively overcomplicating this, just do rounding on the Unix timestamp level:
function roundMyTime($time)
{
$time = strtotime($time);
$time = 15*round($time/15);
echo date('H:i:s', $time)."\n";
}
roundMyTime('18:35:17');
roundMyTime('18:35:27');
roundMyTime('18:35:37');
roundMyTime('18:35:47');
roundMyTime('18:35:57');
roundMyTime('18:36:07');
roundMyTime('18:36:17');
Outputs:
18:35:15
18:35:30
18:35:30
18:35:45
18:36:00
18:36:00
18:36:15
Demo here.
$seconds = ($hr * 60 + $mn) * 60 + $sc; // convert to seconds
$rounded = round($seconds/15)*15; // round
$sc = $rounded % 60; // get seconds
$mn = ($rounded - $sc) / 60 % 60; // get minutes
$hr = ($rounded - $sc - $mn * 60) / 60; // get hours
Convert the date to seconds using strtotime and then just work in seconds.
$seconds = strtotime($date);
$seconds /= 15;
$seconds = round($seconds);
$seconds *= 15;
$date = date("Y-m-d H:i:s", $seconds);
Related
I have problem in converting time which I got from speed and distance, here's my code;
$dist = 30; // Distance which is in kilometres(km)
// speed is in knots(kt), if I take speed of 40kt and convert it into kilometres(km/h) ... 40 * 1.852 = 74.08
$time = ($dist / 74.08) / 24;
// result is 0.016873650107991 which is correct, but my problem is how can this be format in H:m:s,
// tried with date('h:m:s', strtotime($time) but result is always 01:01:00 no mater the distance
echo $time;
Any ideas how to format the time into H:m:s or improve this code?
I have search the stack but did not found similar problem, if I missed sorry for duplication, but link is more than welcome.
This will also cover the case if the number of hours is > 24
$dist = 10; // Distance which is in kilometres(km)
$ts = ($dist / 74.08) * 3600; // in seconds
$h = floor($ts/3600);
$m = floor(($ts / 60) % 60);
$s = $ts % 60;
echo "$h:$m:$s";
This might help,
$dist = 10; // Distance which is in kilometres(km)
// speed is in knots(kt), if I take speed of 40kt and convert it into kilometres(km/h) ... 40 * 1.852 = 74.08
$time = ($dist / 74.08);
echo gmdate("H:i:s", $time * 3600);
This is not a duplicate question, but involves a little understanding about time.
I need a solution to the following problem
I have a number of specifically produced times (based on a date), that need to be rounded to the nearest 15 secs:
60 secs is 1 minute
meaning a regular round, floor, ceiling is to the nearest decimal (10/5)
which doesn't help me with time.
also since I'm dealing with secs, it could be that 59:59 will be rounded up to the nearest hour: e.g. 17:59:59 should be 18:00.
example:
6:17:29 rounded to 6:17:30
6:29:55 rounded to 6:30:00
20:45:34 rounded to 20:45:30
The following code does some of the job:
$hr = date('H',($resultStr));
$mn = date('i',($resultStr));
$sc = date('s',($resultStr));
$tot = ($hr * 60 * 60) + ($mn * 60) + $sc;
$totd = $tot / (60);
$totc = ceil($totd);
$totc = $totc / 60;
$hr = floor($totc);
$mn = ($totc - $hr)*60;
$mnflr = floor($mn);
$mn2 = $mn - $mnflr;
echo "$hr:$mnflr";
This results in:
18:35:17 rounded to: 18:36 (which is wrong)
18:31:49 rounded to: 18:32 (which is wrong)
As an aside:
$secs = date('U',($resultStr));
$round = ceil ( (($secs / 60 ) * 60 ));
$newtime = date('H:i:s',($round));
produces: 18:42:58 rounded to: 18:42:58 which is also incorrect
Please and thank you in advance....
You're massively overcomplicating this, just do rounding on the Unix timestamp level:
function roundMyTime($time)
{
$time = strtotime($time);
$time = 15*round($time/15);
echo date('H:i:s', $time)."\n";
}
roundMyTime('18:35:17');
roundMyTime('18:35:27');
roundMyTime('18:35:37');
roundMyTime('18:35:47');
roundMyTime('18:35:57');
roundMyTime('18:36:07');
roundMyTime('18:36:17');
Outputs:
18:35:15
18:35:30
18:35:30
18:35:45
18:36:00
18:36:00
18:36:15
Demo here.
$seconds = ($hr * 60 + $mn) * 60 + $sc; // convert to seconds
$rounded = round($seconds/15)*15; // round
$sc = $rounded % 60; // get seconds
$mn = ($rounded - $sc) / 60 % 60; // get minutes
$hr = ($rounded - $sc - $mn * 60) / 60; // get hours
Convert the date to seconds using strtotime and then just work in seconds.
$seconds = strtotime($date);
$seconds /= 15;
$seconds = round($seconds);
$seconds *= 15;
$date = date("Y-m-d H:i:s", $seconds);
How do I divide a decimal by time queried from database as time format.
Any idea?
$time = date($entity->getTime()->format('H:i:s'));
$speed = $distance/$time
Which is definitely wrong and if my time is 00:40:00, I get some division by zero error.
I am unable to convert it to seconds because php takes DateTime from Time format in database.
I propose that you get your time in seconds, but you need to convert minutes and hours to seconds.
$seconds = date($entity->getTime()->format('s'));
$minutes = date($entity->getTime()->format('i'));
$hours = date($entity->getTime()->format('h'));
$time = $hours * 3600 + $minutes * 60 + $seconds;
$speed = $distance/$time;
Checkout strtotime() to convert it to seconds.
Docs: http://php.net/manual/en/function.strtotime.php
With strtotime it is a little bit tricky and only goes to 24:59:59.
Else use Voitcus solution.
$time = '00:40:00';
echo strtotime("1970-01-01 $time UTC");
1) Get time in seconds
function time2seconds($time='00:00:00')
{
list($hours, $mins, $secs) = explode(':', $time);
return ($hours * 3600 ) + ($mins * 60 ) + $secs;
}
$time = date($entity->getTime()->format('H:i:s'));
$timeInSeconds = time2seconds($time);
$distance = 40000;
$speed = $distance/$timeInSeconds;
2) If you are using MySQL database use function TIME_TO_SEC(time)
$time = date($entity->getTime()->format('H:i:s'));
$speed = $distance/$time
It's wrong. You must do:
$speed = $distance/$time * 3.6;
For instance this equation is valid 30km/H = 30000m * 3600 seconds * 3.6
I'm taking a total number of minutes and am trying to calculate total hrs & minutes.
If you do:
$elapsed = "6476"; // Trying to get 107:56 (107 hours, 56 min)
if ($elapsed > 60) { $format = "i:s"; }
if ($elapsed > 3600) { $format = "H:i:s"; }
$showdiff = gmdate($format, $elapsed);
The problem with this is it doesn't work for calculations above 23hrs 59min.
So, you can do simple division:
$elapsed = $elapsed / 60; // total hours
Only then you will get a fraction (in this case, 107.933333333). I need to keep this as hours and minutes. Any suggestions?
You should be able to use division (as you've stated) and modulus division to accomplish what you want.
$hours = floor($elapsed / 60);
$minutes = round(($elapsed / 60) % 60);
echo $hours . "hrs " . $minutes . "min";
you could try
$elapsed = $elapsed / 60; // total hours (107.933333333)
$parts = explode(".", $elapsed); // split 107.93333 into 2 parts using the . as a separator
$minutes = $parts[1] // $parts[0] is 107, this will be the .9333
$minutes = $minutes * 60 // = 55.99...
$minutes = round($minutes); // round 55.9999 up to 56
$hours = $parts[0];
echo "$hours hrs $minutes mins";
probably could be written a bit better but my excuse is I'm tired :)
That should give you an idea though and let you do what you need to.
I'm using my iTunes library to get data from about 1,100 mp3s and I'm running into a small issue in getting the duration of the library into minutes and seconds.
$duration = 1893642;
$minutes = bcmod(($duration / 60), 60);
$seconds = bcmod($duration, 60);
echo $minutes.":".$seconds; //returns 0:42
The problem is that this specific MP3 is actually 31:42. Any thoughts on why this isn't working?
$minutes = bcmod(($duration / 60), 60);
is taking the minutes modulo 60. Unless your track is over an hour it will always say 0.
You want it to be
$minutes = floor($duration / 60);
Try this function
function formatTime($secs) {
$times = array(3600, 60, 1);
$time = '';
$tmp = '';
for($i = 0; $i < 3; $i++) {
$tmp = floor($secs / $times[$i]);
if($tmp < 1) {
$tmp = '00';
}
elseif($tmp < 10) {
$tmp = '0' . $tmp;
}
$time .= $tmp;
if($i < 2) {
$time .= ':';
}
$secs = $secs % $times[$i];
}
return $time;
}
Not sure if the following function was available when this question was written, but as it's a question I've been asking myself so here goes.
I used the answer above:
$seconds = bcmod($row{'playtime_seconds'}, 60);
$minutes = floor($row{'playtime_seconds'} / 60);
$hours = floor($minutes / 60);
Which works for the majority of times, but there is no padding - so you can end up with 20:1 when it should be 20:01 - and it's not to good over an hour - one length comes in at length="1:70:9" - so an alternative is to use the "date" function.
<?=date("H:i:s", $duration); ?>
which returns 00:31:42 from that number of seconds
$duration_str = sprintf('%s:%02s:%02s',
floor($duration_int / 3600), // hours
floor($duration_int / 60) - floor($duration_int / 3600) * 60, // minutes
$duration_int % 60); // seconds
The *printf functions provide formatting. In this case the leading zero.
The minutes line is the most complex part, since you have to calculate the hours (duration [s] / 3600 [s/h]), then round down to integer (floor()), then multiply with 60 to transform to minutes, then subtract that from the total number of minutes (duration [s] / 60 [s/m]).
If your durations are shorter than an hour, the code is much simpler:
$duration_str = sprintf('%s:%02s', floor($duration_int / 60), $duration_int % 60);
The result is still correct for a duration greater than 59 minutes, but just not as readable (31560 minutes in the example).