function relativeTime($timestamp, $format = 'Y-m-d H:i'){
$dif = time() - $timestamp;
$dateArray = array(
"second" => 60, // 60 seconds in 1 minute
"minute" => 60, // 60 minutes in 1 hour
"hour" => 24, // 24 hours in 1 day
"day" => 7, // 7 days in 1 week
"week" => 4, // 4 weeks in 1 month
"month" => 12, // 12 months in 1 year
"year" => 10 // Up to 10 years
);
foreach($dateArray as $key => $item){
if($dif < $item)
return $dif . ' ' . $key . ($dif == 1? '' : 's') . ' ago';
$dif = round($dif/$item);
}
return date($format, $timestamp);
}
class Date_Difference
{
public static function getStringResolved($date, $compareTo = NULL)
{
if(!is_null($compareTo)) {
$compareTo = new DateTime($compareTo);
}
return self::getString(new DateTime($date), $compareTo);
}
public static function getString(DateTime $date, DateTime $compareTo = NULL)
{
if(is_null($compareTo)) {
$compareTo = new DateTime('now');
}
$diff = $compareTo->format('U') - $date->format('U');
$dayDiff = floor($diff / 86400);
if(is_nan($dayDiff) || $dayDiff < 0) {
return '';
}
if($dayDiff == 0) {
if($diff < 60) {
return 'Just now';
} elseif($diff < 120) {
return '1 minute ago';
} elseif($diff < 3600) {
return floor($diff/60) . ' minutes ago';
} elseif($diff < 7200) {
return '1 hour ago';
} elseif($diff < 86400) {
return floor($diff/3600) . ' hours ago';
}
} elseif($dayDiff == 1) {
return 'Yesterday';
} elseif($dayDiff < 7) {
return $dayDiff . ' days ago';
} elseif($dayDiff == 7) {
return '1 week ago';
} elseif($dayDiff < (7*6)) { // Modifications Start Here
// 6 weeks at most
return ceil($dayDiff/7) . ' weeks ago';
} elseif($dayDiff < 365) {
return ceil($dayDiff/(365/12)) . ' months ago';
} else {
$years = round($dayDiff/365);
return $years . ' year' . ($years != 1 ? 's' : '') . ' ago';
}
}
}
// pass in a String DateTime, compared to another String DateTime (defaults to now)
$myString = Date_Difference::getStringResolved('-7 weeks');
$myString = Date_Difference::getStringResolved('-7 weeks', '+1 week');
// pass in a DateTime object, compared to another DateTime object (defaults to now)
// useful with the Propel ORM, which uses DateTime objects internally.
$myString = Date_Difference::getString(new DateTime('-7 weeks'));
$myString = Date_Difference::getString(new DateTime('-7 weeks'), new DateTime('+1 week'));
//Another way, simpler than above
function timeSince($time, $from = null)
{
if ($from == null) {
$from = time();
}
$time = $from - $time;
$chunks = array(
array(60 * 60 * 24 * 365 , 'year'),
array(60 * 60 * 24 * 30 , 'month'),
array(60 * 60 * 24 , 'day'),
array(60 * 60 , 'hour'),
array(60 , 'minute'),
array(1 , 'second')
);
for ($i = 0, $j = count($chunks); $i < $j; $i++) {
$seconds = $chunks[$i][0];
$name = $chunks[$i][1];
if (($count = floor($time / $seconds)) != 0) {
break;
}
}
$print = ($count == 1) ? '1 '.$name : "$count {$name}s";
return $print;
}
//usage example
/*<span title="<?php echo date('r', $timestamp);?>"><?php echo $this->timeSince($timestamp);?></span>*/
function time_elapsed_string($ptime) {
$etime = time() - $ptime;
if ($etime < 1) {
return '0 seconds';
}
$a = array( 12 * 30 * 24 * 60 * 60 => 'year',
30 * 24 * 60 * 60 => 'month',
24 * 60 * 60 => 'day',
60 * 60 => 'hour',
60 => 'minute',
1 => 'second'
);
foreach ($a as $secs => $str) {
$d = $etime / $secs;
if ($d >= 1) {
$r = round($d);
return $r . ' ' . $str . ($r > 1 ? 's' : '');
}
}
}
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