note 51079 added to ref.datetime
| From: | datavortex at gmail dot com | Date: | Fri, 18 Mar 2005 23:19:13 +0000 |
| Subject: | note 51079 added to ref.datetime | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-86667@lists.php.net to get a copy of this message | ||
This is a litttle function I cobbled together from my own code, and snippets from this site to
calculate the difference between two datetimes without having to confine it to simply one interval.
This will tell you how many weeks, days, hours, minutes, and seconds there are between the given
datetimes, and also makes a little English string you can use.
This could easily be expanded to include months, and years, but I didn't want to have to deal
with any of the leap year and variable month length stuff.
<?
function dateDiff($dateTimeBegin,$dateTimeEnd) {
$dateTimeBegin =strtotime($dateTimeBegin);
$dateTimeEnd =strtotime($dateTimeEnd);
if($dateTimeEnd === -1 || $dateTimeBegin === -1) {
# error condition
return false;
}
$diff = $dateTimeEnd - $dateTimeBegin;
if ($diff < 0) {
# error condition
return false;
}
$weeks = $days = $hours = $minutes = $seconds = 0; # initialize vars
if($diff % 604800 > 0) {
$rest1 = $diff % 604800;
$weeks = ($diff - $rest1) / 604800; # seconds a week
if($rest1 % 86400 > 0) {
$rest2 = ($rest1 % 86400);
$days = ($rest1 - $rest2) / 86400; # seconds a day
if( $rest2 % 3600 > 0 ) {
$rest3 = ($rest2 % 3600);
$hours = ($rest2 - $rest3) / 3600; # seconds an hour
if( $rest3 % 60 > 0 ) {
$seconds = ($rest3 % 60);
$minutes = ($rest3 - $seconds) / 60; # seconds a minute
} else {
$minutes = $rest3 / 60;
}
} else {
$hours = $rest2 / 3600;
}
} else {
$days = $rest1/ 86400;
}
}else {
$weeks = $diff / 604800;
}
$string = array();
if($weeks > 1) {
$string[] = "$weeks weeks";
} elseif ($weeks == 1) {
$string[] = "a week";
}
if($days > 1) {
$string[] = "$days days";
} elseif($days == 1) {
$string[] = "a day";
}
if($hours > 1) {
$string[] = "$hours hours";
} elseif ($hours == 1) {
$string[] = "an hour";
}
if($minutes > 1) {
$string[] = "$minutes minutes";
} elseif ($minutes == 1) {
$string[] = "a minute";
}
if($seconds > 1) {
$string[] = "$seconds seconds";
} elseif($seconds == 1) {
$string[] = "a second";
}
# join together all the strings in the array above except the last element
$text = join(', ', array_slice($string,0,sizeof($string)-1)) . ", and ";
$text .= array_pop($string); # put the last one on after the and
return array($text, $weeks, $days, $hours, $minutes, $seconds);
?>
----
Manual Page -- http://www.php.net/manual/en/ref.datetime.php
Edit -- http://master.php.net/manage/user-notes.php?action=edit+51079
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