PHP时间戳和日期相互转换操作实例小结

$todaytime=strtotime(\"today\")

date(\"Y-m-d H:i\",$todaytime)

date(\"Y-m-d H:i:s\",time())

date(\"Y-m-d\",time())

class SaonekController extends Controller {
 public function indexAction() {
  /*
  时间戳转换成日期不用说了
  但是日期要转成时间戳的话就要用到
  strtotime()
  */
  $time = time(); //时间戳
  $nowtime = date(\'Y-m-d H:i:s\', $time); //生成带格式的日期
  $oldtime = \'2010-11-10 22:19:21\';
  $catime = strtotime($oldtime); //日期转换为时间戳
  $nowtimes = date(\'Y-m-d H:i:s\', $catime); //时间戳又转回日期了
  echo $nowtimes;
 }
}
?>

/*
时间转换函数
*/
function transTime($ustime) {
 $ytime = date(\"Y-m-d H:i\", $ustime);
 $rtime = date(\"n月j日 H:i\", $ustime);
 $htime = date(\"H:i\", $ustime);
 $time = time() - $ustime;
 $todaytime = strtotime(\"today\");
 $time1 = time() - $todaytime;
 if ($time < 60) {
  $str = \'刚刚\';
 } else
  if ($time < 60 * 60) {
   $min = floor($time / 60);
   $str = $min . \'分钟前\';
  } else
   if ($time < $time1) {
    $str = \'今天\' . $htime;
   } else {
    $str = $rtime;
   }
 return $str;
}

strtotime(\"+1 day\")

echo date(\"Y-m-d H:i:s\",time())

echo date(\"Y-m-d H:i:s\",strtotime(\"+1 day\"))

strtotime(\"-1 day\")

echo date(\"Y-m-d H:i:s\",time())

echo date(\"Y-m-d H:i:s\",strtotime(\"-1 day\"))

strtotime(\"+1 week\")

echo date(\"Y-m-d H:i:s\",time())

echo date(\"Y-m-d H:i:s\",strtotime(\"+1 week\"))

strtotime(\"-1 week\")

echo date(\"Y-m-d H:i:s\",time())

echo date(\"Y-m-d H:i:s\",strtotime(\"-1 week\"))

strtotime(\"next Thursday\")

echo date(\"Y-m-d H:i:s\",time())

echo date(\"Y-m-d H:i:s\",strtotime(\"next Thursday\"))

strtotime(\"last Thursday\")

echo date(\"Y-m-d H:i:s\",time())

echo date(\"Y-m-d H:i:s\",strtotime(\"last Thursday\"))

date_default_timezone_set(\'PRC\'); //设置中国时区