$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>”;
echo “zero1早于zero2′;
echo “zero2早于zero1′;

$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

$startdate="2010-12-11 11:40:00";
$enddate="2012-12-12 11:45:09";
echo $date."天<br>";
echo $hour."小时<br>";
echo $minute."分钟<br>";
echo $second."秒<br>";


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