strtotime
This function formats an elapsed time or a time-difference value by distributing the value in seconds in to years, months, weeks, etc. (akin to using varying numbers of currency notes and coins of different denominations for the same amount of money)
/*
* Formatted time-difference between $t1 and $t2 (seconds)
* The difference in seconds is distributed into years, months, etc. as specified by $format.
* $format is a string containing characters y, f, w, d, h, m or s, for years, months, weeks, days, hours, minutes or seconds, resp.
* Output is an array containing keys y, f, etc., with the numerical values.
* Values are negative if $t1 is more than $t2.
*/
function FormatTimeDiff($t1, $t2=null, $format='yfwdhms'){
$t2 = $t2 === null ? time() : $t2;
$s = abs($t2 - $t1);
$sign = $t2 > $t1 ? 1 : -1;
$out = array();
$left = $s;
$format = array_unique(str_split(preg_replace('`[^yfwdhms]`', '', strtolower($format))));
$format_count = count($format);
$a = array('y'=>31556926, 'f'=>2629744, 'w'=>604800, 'd'=>86400, 'h'=>3600, 'm'=>60, 's'=>1);
$i = 0;
foreach($a as $k=>$v){
if(in_array($k, $format)){
++$i;
if($i != $format_count){
$out[$k] = $sign * (int)($left / $v);
$left = $left % $v;
}else{
$out[$k] = $sign * ($left / $v);
}
}else{
$out[$k] = 0;
}
}
return $out;
}
print_r(FormatTimeDiff(1, 86402));
print_r(FormatTimeDiff(1, 86402, 'hms')); // distribute into hours, minutes and seconds only
print_r(FormatTimeDiff(1, 86402, 'ds')); // distribute into days and minutes only
print_r(FormatTimeDiff(86402, 1, 'm')); // distribute into only minutes
/*
Output:
Array([y]=>0 [f]=>0 [w]=>0 [d]=>1 [h]=> 0 [m]=>0 [s]=>1)
Array([y]=>0 [f]=>0 [w]=>0 [d]=>0 [h]=>24 [m]=>0 [s]=>1)
Array([y]=>0 [f]=>0 [w]=>0 [d]=>1 [h]=> 0 [m]=>0 [s]=>1)
Array([y]=>0 [f]=>0 [w]=>0 [d]=>0 [h]=> 0 [m]=>-1440.01666667 [s]=>0)
*/
time
(PHP 4, PHP 5)
time — Devuelve la marca de tiempo Unix actual
Descripción
int time
( void
)
Devuelve la hora actual medida en número de segundos desde el Epoch Unix (Enero 1 1970 00:00:00 GMT).
Ejemplos
Example #1 Ejemplo de time()
<?php
$proxima_semana = time() + (7 * 24 * 60 * 60);
// 7 días; 24 horas; 60 mins; 60segs
echo 'Ahora: '. date('Y-m-d') ."\n";
echo 'Próxima Semana: '. date('Y-m-d', $proxima_semana) ."\n";
// o usando strtotime():
echo 'Próxima Semana: '. date('Y-m-d', strtotime('+1 week')) ."\n";
?>
El resultado del ejemplo seria algo similar a:
Ahora: 2005-03-30 Próxima Semana: 2005-04-06 Próxima Semana: 2005-04-06
Notes
Tip
La marca de tiempo del comienzo de la petición está disponible en $_SERVER['REQUEST_TIME'] a partir de PHP 5.1.
add a note
User Contributed Notestime
Santosh Patnaik
31-May-2008 10:06
31-May-2008 10:06
davidpesta dot spamisveryverybad at gmail dot com
25-May-2008 09:45
25-May-2008 09:45
miguelangeldavila at yahoo dot com dot mx,
Your example shows that the PHP date() function breaks from the Y2K38 bug. However, it does not show that the PHP time() function will break on 64 bit systems.
If PHP uses native operating system functions to fetch a timestamp with time(), then the PHP time() function may work fine on 64 bit systems.
Considering the amazing speed difference between time() and date("U") (which is ~400 times slower), I suspect that very different processes are at work between the two functions.
south dot minds at gmail dot com
16-May-2008 08:09
16-May-2008 08:09
Format seconds (if less or equal to 86400) into hours, minutes and seconds ± 1 sec. Change $time and $myLocale to whatever your want and test from CLI (bash - linux) with
t=''; for i in $(seq 1 20); do t=$t"\n"$(php -f seconds2time.php) ; done ; echo -e "$t" | sort -n
<?php
$time = mt_rand(0,86400);
$myLocale = "es_AR";
setlocale(LC_ALL,$myLocale);
$localeconv = localeconv();
$dec_point =$localeconv['decimal_point'];
($time > 86400) ? die("Time must be less than 86400 seconds") : '';
if($time % 3600 == 0){
$t_h[0] = $time/3600;
$t_m[0] = 0;
$t_s[0] = 0;
}else if ($time >= 3600 && ($time % 60) == 0 ){
$t_h = explode($dec_point,$time / 3600);
$t_m = explode($dec_point,('0.'.$t_h[1]) * 3600 / 60);
$t_s[0] = 0;
}else if($time < 3600 && ($time % 60) == 0 ){
$t_h[0] = 0;
$t_m = explode($dec_point,$time/ 60);
$t_s[0] = 0;
}else{
$t_h = explode($dec_point,$time / 3600);
$t_m = explode($dec_point,('0.'.$t_h[1]) * 3600 / 60);
$t_s[0] = ceil(('0.'.$t_m[1]) * 60);
}
print sprintf('%05d',$time) .' = ' . sprintf('%02d',$t_h[0]). ' hs. '. sprintf('%02d',$t_m[0]) . ' min. ' .sprintf('%02d',$t_s[0]) ." seg. \n";
?>
binupillai2003 at yahoo dot com
02-Apr-2008 10:10
02-Apr-2008 10:10
Calculate time difference(24 hours system)
<?php
//Author Binu.v.Pillai
function diffTime($bigTime,$smallTime)
{
//input format hh:mm:ss
list($h1,$m1,$s1)=split(":",$bigTime);
list($h2,$m2,$s2)=split(":",$smallTime);
$second1=$s1+($h1*3600)+($m1*60);//converting it into seconds
$second2=$s2+($h2*3600)+($m2*60);
if ($second1==$second2)
{
$resultTime="00:00:00";
return $resultTime;
exit();
}
if ($second1<$second2) //
{
$second1=$second1+(24*60*60);//adding 24 hours to it.
}
$second3=$second1-$second2;
//print $second3;
if ($second3==0)
{
$h3=0;
}
else
{
$h3=floor($second3/3600);//find total hours
}
$remSecond=$second3-($h3*3600);//get remaining seconds
if ($remSecond==0)
{
$m3=0;
}
else
{
$m3=floor($remSecond/60);// for finding remaining minutes
}
$s3=$remSecond-(60*$m3);
if($h3==0)//formating result.
{
$h3="00";
}
if($m3==0)
{
$m3="00";
}
if($s3==0)
{
$s3="00";
}
$resultTime="$h3:$m3:$s3";
return $resultTime;
}
?>
Rana Email: rana_0036 at yahoo dot com
16-Mar-2008 11:03
16-Mar-2008 11:03
Here some example i have implemented. I think it will be helpful someone.
function fullDateFormat( $value ){
$d = explode("-", $value);
$cdate = date ("F j, Y", mktime (0,0,0,$d[1],$d[2],$d[0]));
echo $cdate;
}
//-----Enter date format like mysql date (e.g. 2000-01-30)------//
fullDateFormat("2008-03-17");
function detailsDateFormat( $value ){
$d = explode("-", $value);
$cdate = date ("l F j, Y", mktime (0,0,0,$d[1],$d[2],$d[0]));
echo $cdate;
}
//-----Enter date format like mysql date (e.g. 2000-01-30)------//
detailsDateFormat("2008-03-17");
miguelangeldavila at yahoo dot com dot mx
24-Dec-2007 09:50
24-Dec-2007 09:50
PHP is affected by the Y2K38 bug.
<?php
$current_time = time();
$years_from_now = 50;
$remaining_seconds = 60 * 60 * 24 * 365 * $years_from_now;
$future_unix_time = $current_time + $remaining_seconds;
$future_date = date('Y-m-d', $future_unix_time);
echo $future_date;
// 1921-11-05
?>
It is caused because the PHP uses the C 32 bits time function
stack-phpnotes at landstander dot com
22-Oct-2007 04:31
22-Oct-2007 04:31
My modification and enhancements to the timeDiff() function last updated by sean sullivan. The rewrite was done to add a couple new optional parameters but I also got a bump in performance. On a completely personal preference level I changed the month and year second values with ones I got from Google searches.
Written and tested with 5.2.0.
Options include
to = time(); date to compute the range to
parts = 1; number of parts to display max
precision = 'second'; lowest part to compute to
distance = TRUE; include the 'ago' or 'away' bit
separator = ', '; separates the parts
<?php
function timeDiff($time, $opt = array()) {
// The default values
$defOptions = array(
'to' => 0,
'parts' => 1,
'precision' => 'second',
'distance' => TRUE,
'separator' => ', '
);
$opt = array_merge($defOptions, $opt);
// Default to current time if no to point is given
(!$opt['to']) && ($opt['to'] = time());
// Init an empty string
$str = '';
// To or From computation
$diff = ($opt['to'] > $time) ? $opt['to']-$time : $time-$opt['to'];
// An array of label => periods of seconds;
$periods = array(
'decade' => 315569260,
'year' => 31556926,
'month' => 2629744,
'week' => 604800,
'day' => 86400,
'hour' => 3600,
'minute' => 60,
'second' => 1
);
// Round to precision
if ($opt['precision'] != 'second')
$diff = round(($diff/$periods[$opt['precision']])) * $periods[$opt['precision']];
// Report the value is 'less than 1 ' precision period away
(0 == $diff) && ($str = 'less than 1 '.$opt['precision']);
// Loop over each period
foreach ($periods as $label => $value) {
// Stitch together the time difference string
(($x=floor($diff/$value))&&$opt['parts']--) && $str.=($str?$opt['separator']:'').($x.' '.$label.($x>1?'s':''));
// Stop processing if no more parts are going to be reported.
if ($opt['parts'] == 0 || $label == $opt['precision']) break;
// Get ready for the next pass
$diff -= $x*$value;
}
$opt['distance'] && $str.=($str&&$opt['to']>$time)?' ago':' away';
return $str;
}
?>
Usage:
$span = timeDiff($when);
or
$span = timeDiff($when, array('parts' => 3));
Josh Abraham
28-Sep-2007 07:43
28-Sep-2007 07:43
When dealing with the results of the time function, taking the modulus (remainder) is often a good way to find recurring information such as day of the week, week of the year, or month of the year. In the example given below of a firefighter's shift, you could do the following to simplify the code.
<?php
function whatShift() {
$referencePoint = mktime(7, 0, 0, 9, 11, 2004); // Sept 11, 2004 at 7AM started an A Shift.
//This is the where we divide the current time since reference by the amount of time in all shifts
//The result of this is the remainder.
$sinceReference = (time() - $referencePoint) % (60 * 60 * 24 * 3);
//The rest of the code can be basically the same so I shortened it here.
if ($sinceReference < 60 * 60 * 25) $shift = "A";
elseif ($sinceReference < 60 * 60 * 49) $shift = "B";
else $shift = "C";
return $shift;
}
?>
jon at freilich dot com
21-Sep-2007 09:30
21-Sep-2007 09:30
Fire Fighters typically work one day on and two days off. Known as shifts and generally referred to as A, B and C. I need to compute this for a web script so I came up with the following function.
Notes: You may need to change the reference date as not all departments are on the same rotation. Also, this does not take into account daylight savings time so the changeover moves by an hour.
<?php
function whatShift() {
$referencePoint = mktime(7, 0, 0, 9, 11, 2004); // Sept 11, 2004 at 7AM started an A Shift.
$now = time();
// Next we need to know how many seconds since the start of the last A Shift.
// First we compute how many 3 days cycles since the reference point then
// subtract that number.
$difference = ($now - $referencePoint);
$cycles = floor($difference / (60 * 60 * 24 * 3));
$sinceReference = ($difference - ($cycles * 60 * 60 * 24 * 3));
if ($sinceReference < 60 * 60 * 25) { // Before the start of the 25th hour it's A Shift.
$shift = "A";
}
elseif ($sinceReference < 60 * 60 * 49) { // Else before the start of the 49th hour it's B Shift.
$shift = "B";
}
else {
$shift = "C"; // Else it's C Shift.
}
return $shift;
}
?>
kobieta dot ryba at gmail dot com
12-Sep-2007 04:23
12-Sep-2007 04:23
Time left function:
<?php
define("TIME_PERIODS_PLURAL_SINGULAR", "weeks:week,years:year,days:day,hours:hour, : ,minutes:minute,seconds:second");
DEFINE("TIME_LEFT_STRING_TPL", " #num# #period#");
/**
* @param $time time stamp
**/
function time_left($time)
{
if (($now = time()) <= $time) return false;
$timeRanges = array('years' => 365*60*60*24,/* 'weeks' => 60*60*24*7, */ 'days' => 60*60*24, 'hours' => 60*60, 'minutes' => 60, 'seconds' => 1);
$secondsLeft = $now-$time;
// prepare ranges
$outRanges = array();
foreach ($timeRanges as $period => $sec)
if ($secondsLeft/$sec >= 1)
{
$outRanges[$period] = floor($secondsLeft/$sec);
$secondsLeft -= ($outRanges[$period] * $sec);
}
// playing with TIME_PERIODS_PLURAL_SINGULAR
$periodsEx = explode(",", TIME_PERIODS_PLURAL_SINGULAR);
$periodsAr = array();
foreach ($periodsEx as $periods)
{
$ex = explode(":", $periods);
$periodsAr[$ex[0]] = array('plural' => $ex[0], 'singular' => $ex[1]);
}
// string out
$outString = "";
$outStringAr = array();
foreach ($outRanges as $period => $num)
{
$per = $periodsAr[$period]['plural'];
if ($num == 1) $per = $periodsAr[$period]['singular'];
$outString .= $outStringAr[$period] = str_replace(array("#num#", "#period#"), array($num, $per), TIME_LEFT_STRING_TPL);
}
return array('timeRanges' => $outRanges, 'leftStringAr' => $outStringAr, 'leftString' => $outString);
}
print_r(time_left(time()-60*60*24*365+59));
?>
Output:
Array
(
[timeRanges] => Array
(
[days] => 364
[hours] => 23
[minutes] => 59
[seconds] => 1
)
[leftStringAr] => Array
(
[days] => 364 days
[hours] => 23 hours
[minutes] => 59 minutes
[seconds] => 1 second
)
[leftString] => 364 days 23 hours 59 minutes 1 second
)
by225 at yahoo dot com
06-Sep-2007 12:32
06-Sep-2007 12:32
A function for converting to Unix time without using the MySQL UNIX_TIMESTAMP function in a query (MySQL allows eight different formats for timestamps):
function UnixTime($mysql_timestamp){
if (preg_match('/(\d{4})(\d{2})(\d{2})(\d{2})(\d{2})(\d{2})/', $mysql_timestamp, $pieces)
|| preg_match('/(\d{2})(\d{2})(\d{2})(\d{2})(\d{2})(\d{2})/', $mysql_timestamp, $pieces)) {
$unix_time = mktime($pieces[4], $pieces[5], $pieces[6], $pieces[2], $pieces[3], $pieces[1]);
} elseif (preg_match('/\d{4}\-\d{2}\-\d{2} \d{2}:\d{2}:\d{2}/', $mysql_timestamp)
|| preg_match('/\d{2}\-\d{2}\-\d{2} \d{2}:\d{2}:\d{2}/', $mysql_timestamp)
|| preg_match('/\d{4}\-\d{2}\-\d{2}/', $mysql_timestamp)
|| preg_match('/\d{2}\-\d{2}\-\d{2}/', $mysql_timestamp)) {
$unix_time = strtotime($mysql_timestamp);
} elseif (preg_match('/(\d{4})(\d{2})(\d{2})/', $mysql_timestamp, $pieces)
|| preg_match('/(\d{2})(\d{2})(\d{2})/', $mysql_timestamp, $pieces)) {
$unix_time = mktime(0, 0, 0, $pieces[2], $pieces[3], $pieces[1]);
}
return $unix_time;
}
lsd25 at hotmail dot com
01-Sep-2007 07:53
01-Sep-2007 07:53
I did an article on floating point time you can download from my website. Roun movements is the radial ounion movement and there is a quantum ounion movement as well, this code will generate the data for http://www.chronolabs.org.au/bin/roun-time-article.pdf which is an article on floating point time, I have created the calendar system as well for this time. It is compatible with other time and other solar systems with different revolutions of the planets as well as different quantumy stuff.
Thanks:
<?
if ($gmt>0){
$gmt=-$gmt;
} else {
$gmt=$gmt+$gmt+$gmt;
}
$ptime = strtotime('2008-05-11 10:05 AM')+(60*60*gmt);
$weight = -20.22222222223+(1*gmt);
$roun_xa = ($tme)/(24*60*60);
$roun_ya = $ptime/(24*60*60);
$roun = (($roun_xa -$roun_ya) - $weight)+(microtime/999999);
$nonedeficient = array("seq1" => array(31,30,31,30,30,30,31,30,31,30,31,30),
"seq2" => array(31,30,31,30,31,30,31,30,31,30,31,30),
"seq3" => array(31,30,31,30,30,30,31,30,31,30,31,30),
"seq4" => array(31,30,31,30,30,30,31,30,31,30,31,30));
$deficient = array("seq1" => array(31,30,31,30,30,30,31,30,31,30,31,30),
"seq2" => array(31,30,31,30,31,30,31,30,31,30,31,30),
"seq3" => array(31,30,31,30,31,30,31,30,30,30,31,30),
"seq4" => array(30,30,31,30,31,30,31,30,31,30,31,30));
$monthusage = isset($_GET['deficienty']) ? ${$_GET['deficienty']} : $deficient;
foreach($monthusage as $key => $item){
$i++;
foreach($item as $numdays){
$ttl_num=$ttl_num+$numdays;
}
}
$revolutionsperyear = $ttl_num / $i;
$numyears = round((round(ceil($roun)) / $revolutionsperyear),0);
$jtl = abs(abs($roun) - ceil($revolutionsperyear*($numyears+1)));
while($month==0){
$day=0;
foreach($monthusage as $key => $item){
$t++;
$u=0;
foreach($item as $numdays){
if ($ii<abs($roun)){
$isbelow=true;
}
$ii=$ii+$numdays;
if ($ii>abs($roun)){
$isabove=true;
}
if ($isbelow==true&&$isabove==true){
$daynum = floor(($ii-$numday)-abs($roun));
$month = $u;
$month++;
$isbelow=false;
$isabove=false;
$nodaycount=true;
}
if ($nodaycount==false)
$day++;
$u++;
}
}
}
$timer = substr($roun, strpos($roun,'.')+1,strlen($roun)-strpos($roun,'.')-1);
$roun_out= $numyears.'-'.$month.'-'.$daynum.' '.$day.".$timer";
?>
Sean Sullivan
28-Jul-2007 12:51
28-Jul-2007 12:51
Fixed divide by zero warnings given by the timeDiff function. The change is that the for loop doesn't count down to 0 anymore, just 1. I dont think it has any side effects.
# max_detail_levels - how deep to go down? If max_detail_levels is set to 2, text will output something like "3 days 4 hours" instead of "3 days 4 hours 10 minutes 55 seconds"
# precision_level - this is what rspenc29 was trying to accomplish. If you want to only report a minimum value of say 1 hour, then you should set this to "hour"
function timeDiff($timestamp,$detailed=false, $max_detail_levels=8, $precision_level='second'){
$now = time();
#If the difference is positive "ago" - negative "away"
($timestamp >= $now) ? $action = 'away' : $action = 'ago';
# Set the periods of time
$periods = array("second", "minute", "hour", "day", "week", "month", "year", "decade");
$lengths = array(1, 60, 3600, 86400, 604800, 2630880, 31570560, 315705600);
$diff = ($action == 'away' ? $timestamp - $now : $now - $timestamp);
$prec_key = array_search($precision_level,$periods);
# round diff to the precision_level
$diff = round(($diff/$lengths[$prec_key]))*$lengths[$prec_key];
# if the diff is very small, display for ex "just seconds ago"
if ($diff <= 10) {
$periodago = max(0,$prec_key-1);
$agotxt = $periods[$periodago].'s';
return "just $agotxt $action";
}
# Go from decades backwards to seconds
$time = "";
for ($i = (sizeof($lengths) - 1); $i>0; $i--) {
if($diff > $lengths[$i-1] && ($max_detail_levels > 0)) { # if the difference is greater than the length we are checking... continue
$val = floor($diff / $lengths[$i-1]); # 65 / 60 = 1. That means one minute. 130 / 60 = 2. Two minutes.. etc
$time .= $val ." ". $periods[$i-1].($val > 1 ? 's ' : ' '); # The value, then the name associated, then add 's' if plural
$diff -= ($val * $lengths[$i-1]); # subtract the values we just used from the overall diff so we can find the rest of the information
if(!$detailed) { $i = 0; } # if detailed is turn off (default) only show the first set found, else show all information
$max_detail_levels--;
}
}
# Basic error checking.
if($time == "") {
return "Error-- Unable to calculate time.";
} else {
return $time.$action;
}
}
nimit dot maru at dontspam-gmail dot com
19-Jul-2007 01:56
19-Jul-2007 01:56
Correcting some problems with rspenc29's addition, and adding another feature:
# max_detail_levels - how deep to go down? If max_detail_levels is set to 2, text will output something like "3 days 4 hours" instead of "3 days 4 hours 10 minutes 55 seconds"
# precision_level - this is what rspenc29 was trying to accomplish. If you want to only report a minimum value of say 1 hour, then you should set this to "hour"
function timeDiff($timestamp,$detailed=false, $max_detail_levels=8, $precision_level='second'){
$now = time();
#If the difference is positive "ago" - negative "away"
($timestamp >= $now) ? $action = 'away' : $action = 'ago';
# Set the periods of time
$periods = array("second", "minute", "hour", "day", "week", "month", "year", "decade");
$lengths = array(1, 60, 3600, 86400, 604800, 2630880, 31570560, 315705600);
$diff = ($action == 'away' ? $timestamp - $now : $now - $timestamp);
$prec_key = array_search($precision_level,$periods);
# round diff to the precision_level
$diff = round(($diff/$lengths[$prec_key]))*$lengths[$prec_key];
# if the diff is very small, display for ex "just seconds ago"
if ($diff <= 10) {
$periodago = max(0,$prec_key-1);
$agotxt = $periods[$periodago].'s';
return "just $agotxt $action";
}
# Go from decades backwards to seconds
$time = "";
for ($i = (sizeof($lengths) - 1); $i>=0; $i--) {
if($diff > $lengths[$i-1] && ($max_detail_levels > 0)) { # if the difference is greater than the length we are checking... continue
$val = floor($diff / $lengths[$i-1]); # 65 / 60 = 1. That means one minute. 130 / 60 = 2. Two minutes.. etc
$time .= $val ." ". $periods[$i-1].($val > 1 ? 's ' : ' '); # The value, then the name associated, then add 's' if plural
$diff -= ($val * $lengths[$i-1]); # subtract the values we just used from the overall diff so we can find the rest of the information
if(!$detailed) { $i = 0; } # if detailed is turn off (default) only show the first set found, else show all information
$max_detail_levels--;
}
}
# Basic error checking.
if($time == "") {
return "Error-- Unable to calculate time.";
} else {
return $time.$action;
}
}
rspenc29 at gmail dot com
13-Jun-2007 06:33
13-Jun-2007 06:33
To further expand on shdowhawk's timeDiff function I added a small but important feature
function timeDiff($timestamp,$detailed=false,$n = 0){
$now = time();
#If the difference is positive "ago" - negative "away"
($timestamp >= $now) ? $action = 'away' : $action = 'ago';
$diff = ($action == 'away' ? $timestamp - $now : $now - $timestamp);
# Set the periods of time
$periods = array("second", "minute", "hour", "day", "week", "month", "year", "decade");
$lengths = array(1, 60, 3600, 86400, 604800, 2630880, 31570560, 315705600);
# Go from decades backwards to seconds
$i = sizeof($lengths) - 1; # Size of the lengths / periods in case you change them
$time = ""; # The string we will hold our times in
while($i >= $n) {
if($diff > $lengths[$i-1]) { # if the difference is greater than the length we are checking... continue
$val = floor($diff / $lengths[$i-1]); # 65 / 60 = 1. That means one minute. 130 / 60 = 2. Two minutes.. etc
$time .= $val ." ". $periods[$i-1].($val > 1 ? 's ' : ' '); # The value, then the name associated, then add 's' if plural
$diff -= ($val * $lengths[$i-1]); # subtract the values we just used from the overall diff so we can find the rest of the information
if(!$detailed) { $i = 0; } # if detailed is turn off (default) only show the first set found, else show all information
}
$i--;
}
# Basic error checking.
if($time == "") {
return "Error-- Unable to calculate time.";
} else {
return $time.$action;
}
}
Now you can specify where you want to stop. Example
timeDiff($yourtimestamp,1,4); //Stops after days (no hours, minutes, seconds)
timeDiff($yourtimestamp,1,5); //Stops after hours
sunjith
07-Jun-2007 07:57
07-Jun-2007 07:57
In ron's script, the while loop condition should be ($i >0). Otherwise, the index $lengths goes to -1 which will show an error.
ron at sdcausa dot org
01-Jun-2007 01:26
01-Jun-2007 01:26
Improvement on top of shdowhawk at gmail dot com:
1. Calculate the time difference (from start to end)
2. Time can be provided as formatted (e.g. 2005-04-02 12:11:10) or integer (12233455).
3. Provide a short display, e.g. 12h 3m 23s
if (!function_exists('timeDiff')){
function timeDiff($starttime, $endtime, $detailed=false, $short = true){
if(! is_int($starttime)) $starttime = strtotime($starttime);
if(! is_int($endtime)) $endtime = strtotime($endtime);
$diff = ($starttime >= $endtime ? $starttime - $endtime : $endtime - $starttime);
# Set the periods of time
$periods = array("second", "minute", "hour", "day", "week", "month", "year", "decade");
$lengths = array(1, 60, 3600, 86400, 604800, 2630880, 31570560, 315705600);
if($short){
$periods = array("s", "m", "h", "d", "m", "y");
$lengths = array(1, 60, 3600, 86400, 2630880, 31570560);
}
# Go from decades backwards to seconds
$i = sizeof($lengths) - 1; # Size of the lengths / periods in case you change them
$time = ""; # The string we will hold our times in
while($i >= 0) {
if($diff > $lengths[$i-1]) { # if the difference is greater than the length we are checking... continue
$val = floor($diff / $lengths[$i-1]); # 65 / 60 = 1. That means one minute. 130 / 60 = 2. Two minutes.. etc
$time .= $val . ($short ? '' : ' ') . $periods[$i-1] . ((!$short && $val > 1) ? 's ' : ' '); # The value, then the name associated, then add 's' if plural
$diff -= ($val * $lengths[$i-1]); # subtract the values we just used from the overall diff so we can find the rest of the information
if(!$detailed) { $i = 0; } # if detailed is turn off (default) only show the first set found, else show all information
}
$i--;
}
return $time;
}
}
shdowhawk at gmail dot com
18-May-2007 06:40
18-May-2007 06:40
I modified the timeDiff scripts from what other people just wrote. I added my little twist onto it =)
Basically... now you can add in a detailed option. By default it is turned off, so we get the .. 1 hour ago .. or .. 2 weeks away.
By calling timeDiff($timestamp,1) ... or timeDiff($timeStamp,true) .. we can now get a detailed count down. Ex: 1 hour 7 minutes 47 seconds ago
function timeDiff($timestamp,$detailed=false){
$now = time();
#If the difference is positive "ago" - negative "away"
($timestamp >= $now) ? $action = 'away' : $action = 'ago';
$diff = ($action == 'away' ? $timestamp - $now : $now - $timestamp);
# Set the periods of time
$periods = array("second", "minute", "hour", "day", "week", "month", "year", "decade");
$lengths = array(1, 60, 3600, 86400, 604800, 2630880, 31570560, 315705600);
# Go from decades backwards to seconds
$i = sizeof($lengths) - 1; # Size of the lengths / periods in case you change them
$time = ""; # The string we will hold our times in
while($i >= 0) {
if($diff > $lengths[$i-1]) { # if the difference is greater than the length we are checking... continue
$val = floor($diff / $lengths[$i-1]); # 65 / 60 = 1. That means one minute. 130 / 60 = 2. Two minutes.. etc
$time .= $val ." ". $periods[$i-1].($val > 1 ? 's ' : ' '); # The value, then the name associated, then add 's' if plural
$diff -= ($val * $lengths[$i-1]); # subtract the values we just used from the overall diff so we can find the rest of the information
if(!$detailed) { $i = 0; } # if detailed is turn off (default) only show the first set found, else show all information
}
$i--;
}
# Basic error checking.
if($time == "") {
return "Error-- Unable to calculate time.";
} else {
return $time.$action;
}
}
joncampell at gmail dot com
08-May-2007 01:07
08-May-2007 01:07
Time difference both forward and backward, based on tristan's TimeAgo() function :)
function timeDiff($timestamp){
$now = time();
//If the difference is positive "ago" - negative "away"
($timestamp >= $now) ? $action = 'away' : $action = 'ago';
switch($action) {
case 'away':
$diff = $timestamp - $now;
break;
case 'ago':
default:
// Determine the difference, between the time now and the timestamp
$diff = $now - $timestamp;
break;
}
// Set the periods of time
$periods = array("second", "minute", "hour", "day", "week", "month", "year", "decade");
// Set the number of seconds per period
$lengths = array(1, 60, 3600, 86400, 604800, 2630880, 31570560, 315705600);
// Go from decades backwards to seconds
for ($val = sizeof($lengths) - 1; ($val >= 0) && (($number = $diff / $lengths[$val]) <= 1); $val--);
// Ensure the script has found a match
if ($val < 0) $val = 0;
// Determine the minor value, to recurse through
$new_time = $now - ($diff % $lengths[$val]);
// Set the current value to be floored
$number = floor($number);
// If required create a plural
if($number != 1) $periods[$val].= "s";
// Return text
$text = sprintf("%d %s ", $number, $periods[$val]);
return $text . $action;
}
If anyone knows of an easier way to do this, please comment.
jason at thinkingman dot org
26-Apr-2007 09:58
26-Apr-2007 09:58
Here you go. You can specify how much you wanna see -- years, weeks, days, hours, minutes or seconds. Returns an Array containing a String along with the individual time values.
Usage:
array calc_tl( int $unixTime, [int $unixTime], [char $selector] )
<?php
function calc_tl($t, $sT = 0, $sel = 'Y') {
$sY = 31536000;
$sW = 604800;
$sD = 86400;
$sH = 3600;
$sM = 60;
if($sT) {
$t = ($sT - $t);
}
if($t <= 0) {
$t = 0;
}
$bs[1] = ('1'^'9'); /* Backspace */
switch(strtolower($sel)) {
case 'y':
$y = ((int)($t / $sY));
$t = ($t - ($y * $sY));
$r['string'] .= "{$y} years{$bs[$y]} ";
$r['years'] = $y;
case 'w':
$w = ((int)($t / $sW));
$t = ($t - ($w * $sW));
$r['string'] .= "{$w} weeks{$bs[$w]} ";
$r['weeks'] = $w;
case 'd':
$d = ((int)($t / $sD));
$t = ($t - ($d * $sD));
$r['string'] .= "{$d} days{$bs[$d]} ";
$r['days'] = $d;
case 'h':
$h = ((int)($t / $sH));
$t = ($t - ($h * $sH));
$r['string'] .= "{$h} hours{$bs[$h]} ";
$r['hours'] = $h;
case 'm':
$m = ((int)($t / $sM));
$t = ($t - ($m * $sM));
$r['string'] .= "{$m} minutes{$bs[$m]} ";
$r['minutes'] = $m;
case 's':
$s = $t;
$r['string'] .= "{$s} seconds{$bs[$s]} ";
$r['seconds'] = $s;
break;
default:
return calc_tl($t);
break;
}
return $r;
}
// A few exaggerated examples:
$startTime = time();
$stopTime = mktime(23,59,59,12,31,2011);
$tY = calc_tl($startTime, $stopTime, 'Y'); // Years (default)
$tD = calc_tl($startTime, $stopTime, 'D'); // Days
$tH = calc_tl($startTime, $stopTime, 'H'); // Hours
print_r($tY);
print_r($tD);
print_r($tH);
?>
OUTPUT
Array
(
[string] => 4 years 35 weeks 6 days 4 hours 54 minutes 33 seconds
[years] => 4
[weeks] => 35
[days] => 6
[hours] => 4
[minutes] => 54
[seconds] => 33
)
Array
(
[string] => 1711 days 4 hours 54 minutes 33 seconds
[days] => 1711
[hours] => 4
[minutes] => 54
[seconds] => 33
)
Array
(
[string] => 41068 hours 54 minutes 33 seconds
[hours] => 41068
[minutes] => 54
[seconds] => 33
)
webmaster[at]auscoder[dot]com
25-Apr-2007 07:36
25-Apr-2007 07:36
In a recent object I had to calculate the time difference between timestamps in a string format, so I wrote this nice little function I'd like to share.
<?php
define('INT_SECOND', 1);
define('INT_MINUTE', 60);
define('INT_HOUR', 3600);
define('INT_DAY', 86400);
define('INT_WEEK', 604800);
function get_formatted_timediff($then, $now = false)
{
$now = (!$now) ? time() : $now;
$timediff = ($now - $then);
$weeks = (int) intval($timediff / INT_WEEK);
$timediff = (int) intval($timediff - (INT_WEEK * $weeks));
$days = (int) intval($timediff / INT_DAY);
$timediff = (int) intval($timediff - (INT_DAY * $days));
$hours = (int) intval($timediff / INT_HOUR);
$timediff = (int) intval($timediff - (INT_HOUR * $hours));
$mins = (int) intval($timediff / INT_MINUTE);
$timediff = (int) intval($timediff - (INT_MINUTE * $mins));
$sec = (int) intval($timediff / INT_SECOND);
$timediff = (int) intval($timediff - ($sec * INT_SECOND));
$str = '';
if ( $weeks )
{
$str .= intval($weeks);
$str .= ($weeks > 1) ? ' weeks' : ' week';
}
if ( $days )
{
$str .= ($str) ? ', ' : '';
$str .= intval($days);
$str .= ($days > 1) ? ' days' : ' day';
}
if ( $hours )
{
$str .= ($str) ? ', ' : '';
$str .= intval($hours);
$str .= ($hours > 1) ? ' hours' : ' hour';
}
if ( $mins )
{
$str .= ($str) ? ', ' : '';
$str .= intval($mins);
$str .= ($mins > 1) ? ' minutes' : ' minute';
}
if ( $sec )
{
$str .= ($str) ? ', ' : '';
$str .= intval($sec);
$str .= ($sec > 1) ? ' seconds' : ' second';
}
if ( !$weeks && !$days && !$hours && !$mins && !$sec )
{
$str .= '0 seconds ago';
}
else
{
$str .= ' ago';
}
return $str;
}
?>
greg at mix.lycos.com
24-Apr-2007 12:46
24-Apr-2007 12:46
I found Craig's code useful, but wanted the ability to limit the granularity to only show most significant time periods. there's the bit i adapted:
<?
function ago ( $epoch, $max_phrases=null ) {
$duration = time() - $epoch;
return seconds2human( $duration > 0 ? $duration : 0,
$max_phrases) . " ago";
}
function seconds2human($epoch, $max_phrases=null ){
// kindly adapted from Craig Francis at http://www.php.net/manual/en/function.time.php#74652
//--------------------------------------------------
// Maths
$sec = $epoch % 60;
$epoch -= $sec;
$minSeconds = $epoch % 3600;
$epoch -= $minSeconds;
$min = ($minSeconds / 60);
$hourSeconds = $epoch % 86400;
$epoch -= $hourSeconds;
$hour = ($hourSeconds / 3600);
$daySeconds = $epoch % 604800;
$epoch -= $daySeconds;
$day = ($daySeconds / 86400);
$week = ($epoch / 604800);
//--------------------------------------------------
// Text
$output = array();
if ($week > 0) {
$output[] = $week . ' week' . ($week != 1 ? 's' : '');
}
if ($day > 0) {
$output[] = $day . ' day' . ($day != 1 ? 's' : '');
}
if ($hour > 0) {
$output[] = $hour . ' hour' . ($hour != 1 ? 's' : '');
}
if ($min > 0) {
$output[] = $min . ' minute' . ($min != 1 ? 's' : '');
}
if ($sec > 0 || $output == '') {
$output[] = $sec . ' second' . ($sec != 1 ? 's' : '');
}
//--------------------------------------------------
// Grammar
if( isset($max_phrases) )
$output = array_slice($output, 0, $max_phrases);
$return = join( ', ', $output);
$return = preg_replace('/, ([^,]+)$/', ' and $1', $return);
//--------------------------------------------------
// Return the output
return $return;
}
?>
john at motdidr dot com
12-Mar-2007 04:01
12-Mar-2007 04:01
did a quick test comparing time() with date("U"), using 100,000 iterations. Granted, I did this on a 2.4GHz Celeron... the results should still stand.
time() (100000) : 0.0589900016785
date("U") (100000) : 22.246557951
jh2000 at root24 dot eu
25-Feb-2007 12:08
25-Feb-2007 12:08
Just a small notice:
use the time() function instead of date("U"), it is much faster (about 1000 times~)
tristan at trinicle dot net
23-Nov-2006 02:10
23-Nov-2006 02:10
Initially I was using Andrew's function to convert a timestamp into a formatted age. It has issues with times greater than a day (div by 0). I also added recursion to produce a result similar to "2 decades 6 months 3 weeks 2 days 6 hours 56 minutes 52 seconds" when input a timestamp from 1986. Hopefully someone will find this useful.
<?php
public static function TimeAgo($timestamp){
// Store the current time
$current_time = time();
// Determine the difference, between the time now and the timestamp
$difference = $current_time - $timestamp;
// Set the periods of time
$periods = array("second", "minute", "hour", "day", "week", "month", "year", "decade");
// Set the number of seconds per period
$lengths = array(1, 60, 3600, 86400, 604800, 2630880, 31570560, 315705600);
// Determine which period we should use, based on the number of seconds lapsed.
// If the difference divided by the seconds is more than 1, we use that. Eg 1 year / 1 decade = 0.1, so we move on
// Go from decades backwards to seconds
for ($val = sizeof($lengths) - 1; ($val >= 0) && (($number = $difference / $lengths[$val]) <= 1); $val--);
// Ensure the script has found a match
if ($val < 0) $val = 0;
// Determine the minor value, to recurse through
$new_time = $current_time - ($difference % $lengths[$val]);
// Set the current value to be fl