《PHP时间函数汇总》要点：
本文介绍了PHP时间函数汇总，希望对您有用。如果有疑问，可以联系我们。
date_default_timezone_set('Asia/Shanghai');
function run_time(){
list($msec,$sec) = explode(" ",microtime());
return ((float)$msec + (float)$sec);
}
$start_time = run_time();
$time = time();
echo "time(): {$time}";
$formats = array('U','r','c','l,F jS,Y,g:i A','H:i:s D d M y','m/j/y/ g:i:s a O (T)','Y-m-d H:i:s');
foreach($formats as $format){
echo "$format： ".date($format)."\n";
}
$getdate_array = getdate($time);
echo "getdate(): ";
print_r($getdate_array);
echo "";
echo '';
$dateArray = array(
"Now","today","tomorrow","yesterday",
"Thursday","this Thursday","last Thursday",
"+2 hours","-1 month","+10 minutes","30 seconds",
"+2 years -1 month","next week","last month",
"last year","2 week ago","next Friday"
);
foreach($dateArray as $mydate){
echo "\n";
}
echo '$mydate: ".date('Y-m-d H:i:s',strtotime($mydate))."';
echo '';
setlocale(LC_TIME,"zhs");
echo strftime("Month: %B ");
echo strftime("Day: %A ");
echo '';
echo "mktime函数返回的时间戳：".mktime()."";
echo "当前的日期为：".date("Y-m-d",mktime())."";
echo "当前的时间为：".date("H:i:s",mktime());
echo '';
//time函数
echo "time函数返回的时间戳：".time().'';
echo '当前日期为：'.date('Y-m-d H:i:s')."";
echo "当前的时间为：".date("H:i:s");
echo '';
$timeNow = strtotime(date("Y-m-d H:i:s"));
$time2 = strtotime("2012-12-21 8:10:10");
$sub1 = ceil(($time2 - $timeNow)/3600);
$sub2 = ceil(($time2 - $timeNow)/86400);
echo "离世界末日还有".$sub2."天";
echo "也便是".$sub1."小时";
echo '';
echo 'microtime()函数值:'.microtime();
echo '';
echo '日期转时间戳：2011-2-27：';
echo strtotime("2011-2");
echo '';
echo '时间戳转日期：1298736000：';
echo date("Y-m-d","1298736000");
echo '';
//昨天
$day_s = mktime(0,date("m",strtotime("-1 day")),date("d",date("Y",strtotime("-1 day")));
$day_e = mktime(23,59,strtotime("-1 day")));
echo '昨天';
echo date('Y-m-d H:i:s',$day_s).'';
echo date('Y-m-d H:i:s',$day_e).'';
$year = date( 'Y' );
$month = date('m');
$day = date('d');
//本周
echo '本周';
echo date('Y-m-d H:i:s',mktime(0,$month,$day - date('N'),$year)).'';
echo date('Y-m-d H:i:s',mktime(23,$day - date('N') + 6,$year)).'';
//上周
echo '上周';
echo date('Y-m-d H:i:s',$day - date('N') - 7,$day - date('N') -1,$year)).'';
//本月
echo '本月';
echo date("Y-m-d H:i:s",date('m'),1,date('y'))).'';
echo date("Y-m-d H:i:s",date('m')+1,date('y'))).'';
//上月
echo '上月';
echo date("Y-m-d H:i:s",date('m')-1,date('y'))).'
';
echo date("Y-m-d H:i:s",date('y'))).'';
$end_time = run_time();
echo '该网页的运行时间为：';
echo ($end_time - $start_time);
echo '';
上面格局可能太乱补上几张图片：
