Richard Kurth wrote:
-----Original Message-----
From: Chris Boget [mailto:chris.boget@xxxxxxxx]
Sent: Monday, June 18, 2007 10:55 AM
To: Brad Bonkoski; Richard Kurth
Cc: php-general@xxxxxxxxxxxxx
Subject: Re: subtracting time from date and time
Something like this will get it into a time stamp...and
then you can
do your calculations with ease, and reformat...
<?php
$str = "20070617T193500";
list($date, $time) = explode("T",$str); ?>
Even easier:
$timestamp = strtotime( $str );
http://us2.php.net/manual/en/function.strtotime.php
$oneMinute = 60; // seconds
$oneHour = $oneMinute * 60;
$oneDay = $oneHour * 24;
echo '5 minutes ago: ' . date( 'm/d/Y h:i:s', $timestamp - (
$oneMinute *
5 ));
echo '5 hours ago: ' . date( 'm/d/Y h:i:s', $timestamp - (
$oneHour * 5 )); echo '5 days ago: ' . date( 'm/d/Y h:i:s',
$timestamp - ( $oneDay * 5 ));
This works great tell you get to 8 hours ago it shows the correct time but
it does not change the date to the day before. 8 hours ago should be
06/16/2007 11:35:00 but what it shows is 06/17/2007 11:35:00
$str = "20070617T193500";
Notice that this time stamp is formatted in 24/hr days.
so
year 2007
month 6
day 17
hour 19 = 7pm (not 7am)
minute 15
second 00
$timestamp = strtotime( $str );
$oneMinute = 60; // seconds
$oneHour = $oneMinute * 60;
$oneDay = $oneHour * 24;
echo 'time: ' . date( 'm/d/Y h:i:s', $timestamp );
echo"<br>";
echo '5 minutes ago: ' . date( 'm/d/Y h:i:s', $timestamp - ( $oneMinute *5
));
echo"<br>";
echo '15 minutes ago: ' . date( 'm/d/Y h:i:s', $timestamp - ( $oneMinute *15
));
echo"<br>";
echo '30 minutes ago: ' . date( 'm/d/Y h:i:s', $timestamp - ( $oneMinute *30
));
echo"<br>";
echo '1 hours ago: ' . date( 'm/d/Y h:i:s', $timestamp - ( $oneHour * 1 ));
echo"<br>";
echo '2 hours ago: ' . date( 'm/d/Y h:i:s', $timestamp - ( $oneHour * 2 ));
echo"<br>";
echo '5 hours ago: ' . date( 'm/d/Y h:i:s', $timestamp - ( $oneHour * 5 ));
echo"<br>";
echo '7 hours ago: ' . date( 'm/d/Y h:i:s', $timestamp - ( $oneHour * 7 ));
echo"<br>";
echo '8 hours ago: ' . date( 'm/d/Y h:i:s', $timestamp - ( $oneHour * 8));
--
Jim Lucas
"Some men are born to greatness, some achieve greatness,
and some have greatness thrust upon them."
Twelfth Night, Act II, Scene V
by William Shakespeare
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