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PHP时间比较和时间差如何计算
<?php $zero1=date(“y-m-d h:i:s”); $zero2=”2010-11-29 21:07:00′; echo “zero1的时间为:”.$zero1.”<br>”; echo “zero2的时间为:”.$zero2.”<br>”; if(strtotime($zero1)<strtotime($zero2)){ echo “zero1早于zero2′; }else{ echo “zero2早于zero1′; }
上面是比较两个绝对时间的大小
<?php $zero1=strtotime (date("y-m-d h:i:s")); //当前时间 ,注意H 是24小时 h是12小时 $zero2=strtotime ("2014-1-21 00:00:00"); //过年时间,不能写2014-1-21 24:00:00 这样不对 $guonian=ceil(($zero2-$zero1)/86400); //60s*60min*24h echo "离过年还有<strong>$guonian</strong>天!"; ?>
上面是倒计时小程序实例代码
<?php //PHP计算两个时间差的方法 $startdate="2010-12-11 11:40:00"; $enddate="2012-12-12 11:45:09"; $date=floor((strtotime($enddate)-strtotime($startdate))/86400); $hour=floor((strtotime($enddate)-strtotime($startdate))%86400/3600); $minute=floor((strtotime($enddate)-strtotime($startdate))%86400/60); $second=floor((strtotime($enddate)-strtotime($startdate))%86400%60); echo $date."天<br>"; echo $hour."小时<br>"; echo $minute."分钟<br>"; echo $second."秒<br>"; ?>
<?php //PHP计算两个时间差的方法 $startdate="2010-12-11 11:40:00"; $enddate="2012-12-12 11:45:09"; $date=floor((strtotime($enddate)-strtotime($startdate))/86400); $hour=floor((strtotime($enddate)-strtotime($startdate))%86400/3600); $minute=floor((strtotime($enddate)-strtotime($startdate))%86400/60); $second=floor((strtotime($enddate)-strtotime($startdate))%86400%60); echo $date."天<br>"; echo $hour."小时<br>"; echo $minute."分钟<br>"; echo $second."秒<br>"; ?>
<?php /** * 时间差计算 * * @param Timestamp $time * @return String Time Elapsed * @author Shelley Shyan * @copyright http://phparch.cn (Professional PHP Architecture) */ function time2Units ($time){ $year = floor($time / 60 / 60 / 24 / 365); $time -= $year * 60 * 60 * 24 * 365; $month = floor($time / 60 / 60 / 24 / 30); $time -= $month * 60 * 60 * 24 * 30; $week = floor($time / 60 / 60 / 24 / 7); $time -= $week * 60 * 60 * 24 * 7; $day = floor($time / 60 / 60 / 24); $time -= $day * 60 * 60 * 24; $hour = floor($time / 60 / 60); $time -= $hour * 60 * 60; $minute = floor($time / 60); $time -= $minute * 60; $second = $time; $elapse = ‘‘; $unitArr = array(‘年‘ =>‘year‘, ‘个月‘=>‘month‘, ‘周‘=>‘week‘, ‘天‘=>‘day‘, ‘小时‘=>‘hour‘, ‘分钟‘=>‘minute‘, ‘秒‘=>‘second‘ ); foreach ( $unitArr as $cn => $u ) { if ( $$u > 0 ){ $elapse = $$u . $cn; break; } } return $elapse; } $past = 2052345678; // Some timestamp in the past $now = time(); // Current timestamp $diff = $now - $past; echo ‘发表于‘ . time2Units($diff) . ‘前‘; ?>
链接http://www.cnblogs.com/wellsoho/p/3248082.html
PHP时间比较和时间差如何计算
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