I have a HTML list of about 500 items and a "filter" box above it. I started by using jQuery to filter the list when I typed a letter (timing code added later): $('#filter').keyup( function() { var jqStart = (new Date).getTime(); var search = $(this).val().toLowerCase(); var $list = $('ul.ablist > li'); $list.each( function() { if ( $(this).text().toLowerCase().indexOf(search) === -1 ) $(this).hide(); else $(this).show(); } ); console.log('Time: ' + ((new Date).getTime() - jqStart)); } ); However, there was a couple of seconds delay after typing each letter (particularly the first letter). So I thought it may be slightly quicker if I used plain Javascript (I read recently that jQuery's each function is particularly slow). Here's my JS equivalent: document.getElementById('filter').addEventListener( 'keyup', function () { var jsStart = (new Date).getTime()...
Most of the answers seem focused around converting the date from a string to time. It seems you're mostly thinking about getting the date into the '5 days ago' format, etc.. right?
ReplyDeleteThis is how I'd go about doing that:
$time = strtotime('2010-04-28 17:25:43');
echo 'event happened '.humanTiming($time).' ago';
function humanTiming ($time)
{
$time = time() - $time; // to get the time since that moment
$tokens = array (
31536000 => 'year',
2592000 => 'month',
604800 => 'week',
86400 => 'day',
3600 => 'hour',
60 => 'minute',
1 => 'second'
);
foreach ($tokens as $unit => $text) {
if ($time < $unit) continue;
$numberOfUnits = floor($time / $unit);
return $numberOfUnits.' '.$text.(($numberOfUnits>1)?'s':'');
}
}
I haven't tested that, but it should work.
The result would look like
event happened 4 days ago
or
event happened 1 minute ago
cheers
Want to share php function which results in grammetically correct facebook like human reable time format.
ReplyDeleteExample:
echo get_time_ago(strtotime('now'));
Result:
less than 1 minute ago
function get_time_ago($time_stamp)
{
$time_difference = strtotime('now') - $time_stamp;
if ($time_difference >= 60 * 60 * 24 * 365.242199)
{
/*
* 60 seconds/minute * 60 minutes/hour * 24 hours/day * 365.242199 days/year
* This means that the time difference is 1 year or more
*/
return get_time_ago_string($time_stamp, 60 * 60 * 24 * 365.242199, 'year');
}
elseif ($time_difference >= 60 * 60 * 24 * 30.4368499)
{
/*
* 60 seconds/minute * 60 minutes/hour * 24 hours/day * 30.4368499 days/month
* This means that the time difference is 1 month or more
*/
return get_time_ago_string($time_stamp, 60 * 60 * 24 * 30.4368499, 'month');
}
elseif ($time_difference >= 60 * 60 * 24 * 7)
{
/*
* 60 seconds/minute * 60 minutes/hour * 24 hours/day * 7 days/week
* This means that the time difference is 1 week or more
*/
return get_time_ago_string($time_stamp, 60 * 60 * 24 * 7, 'week');
}
elseif ($time_difference >= 60 * 60 * 24)
{
/*
* 60 seconds/minute * 60 minutes/hour * 24 hours/day
* This means that the time difference is 1 day or more
*/
return get_time_ago_string($time_stamp, 60 * 60 * 24, 'day');
}
elseif ($time_difference >= 60 * 60)
{
/*
* 60 seconds/minute * 60 minutes/hour
* This means that the time difference is 1 hour or more
*/
return get_time_ago_string($time_stamp, 60 * 60, 'hour');
}
else
{
/*
* 60 seconds/minute
* This means that the time difference is a matter of minutes
*/
return get_time_ago_string($time_stamp, 60, 'minute');
}
}
function get_time_ago_string($time_stamp, $divisor, $time_unit)
{
$time_difference = strtotime("now") - $time_stamp;
$time_units = floor($time_difference / $divisor);
settype($time_units, 'string');
if ($time_units === '0')
{
return 'less than 1 ' . $time_unit . ' ago';
}
elseif ($time_units === '1')
{
return '1 ' . $time_unit . ' ago';
}
else
{
/*
* More than "1" $time_unit. This is the "plural" message.
*/
// TODO: This pluralizes the time unit, which is done by adding "s" at the end; this will not work for i18n!
return $time_units . ' ' . $time_unit . 's ago';
}
}
Wrote my own
ReplyDeletefunction getElapsedTime($eventTime)
{
$totaldelay = time() - strtotime($eventTime);
if($totaldelay <= 0)
{
return '';
}
else
{
if($days=floor($totaldelay/86400))
{
$totaldelay = $totaldelay % 86400;
return $days.' days ago.';
}
if($hours=floor($totaldelay/3600))
{
$totaldelay = $totaldelay % 3600;
return $hours.' hours ago.';
}
if($minutes=floor($totaldelay/60))
{
$totaldelay = $totaldelay % 60;
return $minutes.' minutes ago.';
}
if($seconds=floor($totaldelay/1))
{
$totaldelay = $totaldelay % 1;
return $seconds.' seconds ago.';
}
}
}
One option that'll work with any version of PHP is to do what's already been suggested, which is something like this:
ReplyDelete$eventTime = '2010-04-28 17:25:43';
$age = time() - strtotime($eventTime);
That will give you the age in seconds. From there, you can display it however you wish.
One problem with this approach, however, is that it won't take into account time shifts causes by DST. If that's not a concern, then go for it. Otherwise, you'll probably want to use the diff() method in the DateTime class. Unfortunately, this is only an option if you're on at least PHP 5.3.
I think I have a function which should do what you want:
ReplyDeletefunction time2string($timeline) {
$periods = array('day' => 86400, 'hour' => 3600, 'minute' => 60, 'second' => 1);
foreach($periods AS $name => $seconds){
$num = floor($timeline / $seconds);
$timeline -= ($num * $seconds);
$ret .= $num.' '.$name.(($num > 1) ? 's' : '').' ';
}
return trim($ret);
}
Simply apply it to the difference between time() and strtotime('2010-04-28 17:25:43') as so:
print time2string(time()-strtotime('2010-04-28 17:25:43')).' ago';
Convert [saved_date] to timestamp. Get current timestamp.
ReplyDeletecurrent timestamp - [saved_date] timestamp.
Then you can format it with date();
You can normally convert most date formats to timestamps with the strtotime() function.
To find out time elapsed i usually use time() instead of date() and formatted time stamps.
ReplyDeleteThen get the difference between the latter value and the earlier value and format accordingly. time() is differently not a replacement for date() but it totally helps when calculating elapsed time.
example:
The value of time() looks something like this 1274467343 increments every second. So you could have $erlierTime with value 1274467343 and $latterTime with value 1274467500, then just do $latterTime - $erlierTime to get time elapsed in seconds.