時刻と日付を他の形式ではなく、UNIX タイムスタンプとして保存するのが最善の方法です。
PHPで日付と時刻を処理するクラスを作成しました。使いやすく、非常に便利です
あなたの場合、提供されたセッターを使用して年、月、日、時、分、秒を設定し、パブリック関数を拡張して日付と時刻を期待される形式で取得できます。
<?php
define("NEW_LINE", "</BR>");
class scTimestamp
{
private $timestamp;
private $year;
private $month;
private $day;
private $hour;
private $minute;
private $second;
public function __construct()
{
register_shutdown_function(array($this,'__destruct'));
$this->setTimestamp($_SERVER['REQUEST_TIME']);
}
public function __destruct()
{
unset($this->timestamp);
unset($this->year);
unset($this->month);
unset($this->day);
unset($this->hour);
unset($this->minute);
unset($this->second);
}
private function rebuildTimestampFromDate()
{
$this->timestamp=mktime($this->hour,$this->minute,$this->second,$this->month,$this->day,$this->year);
}
private function rebuildDateFromTimestamp()
{
$this->day=date('j',$this->timestamp);
$this->month=date('n',$this->timestamp);
$this->year=date('Y',$this->timestamp);
$this->hour=date('g',$this->timestamp);
$this->minute=date('G',$this->timestamp);
$this->second=date('s',$this->timestamp);
}
public function setTimestamp($tempTimestamp)
{
$this->timestamp=$tempTimestamp;
$this->rebuildDateFromTimestamp();
}
public function getTimestamp()
{
return $this->timestamp;
}
public function setYear($tempYear)
{
$this->year = $tempYear;
$this->rebuildTimestampFromDate();
}
public function getYear()
{
return $this->year;
}
public function setMonth($tempMonth)
{
$this->month = $tempMonth;
$this->rebuildTimestampFromDate();
}
public function getMonth()
{
return $this->month;
}
public function setDay($tempDay)
{
$this->day=$tempDay;
$this->rebuildTimestampFromDate();
}
public function getDay()
{
return $this->day;
}
public function setHour($tempHour)
{
$this->hour = $tempHour;
$this->rebuildTimestampFromDate();
}
public function getHour()
{
return $this->hour;
}
public function setMinute($tempMinute)
{
$this->minute = $tempMinute;
$this->rebuildTimestampFromDate();
}
public function getMinute()
{
return $this->minute;
}
public function setSecond($tempSecond)
{
$this->second = $tempSecond;
$this->rebuildTimestampFromDate();
}
public function getSecond()
{
return $this->second;
}
public function getDateDifferenceFromNow()
{
return $this->getDateDifferenceFrom($_SERVER['REQUEST_TIME']);
}
public function getDateDifferenceFrom($fromDate)
{
$return="";
$sec=" Second";
$min=" Minute";
$hrs=" Hour";
$before=" Before";
$difference=$fromDate-$this->getTimestamp();
if($difference<0)
$return.="In the Future";
else if($difference<60)
{
if($difference>1)
$sec.="s";
$return.= $difference.$sec.$before;
}
else if($difference<3600)
{
$difference=intval($difference/60);
if($difference>1)
$min.="s";
$return.=$difference.$min.$before;
}
else if($difference<86400)
{
$difference=intval($difference/3600);
if($difference>1)
$hrs.="s";
$return= $difference.$hrs.$before;
}
else if($difference<604800)
{
$return.= date("l g:i a",$this->getTimestamp());
}
else if($difference<28512000)
{
$return.= date("F j",$this->getTimestamp());
}
else
{
$return.= date("F j, Y, g:i a",$this->getTimestamp());
}
return $return;
}
public function getDateAsString()
{
return date("F j, Y",$this->getTimestamp());
}
public function getDateTimeAsString()
{
return date("F j, Y, g:i a",$this->getTimestamp());
}
public function __toString()
{
$return = NEW_LINE."^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^";
$return.= NEW_LINE." ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^".NEW_LINE;
$return.= NEW_LINE."@@ Timestamp: ".$this->getTimestamp()." @@".NEW_LINE;
$return.= NEW_LINE."@@ Date: ".$this->getDateTimeAsString()." @@".NEW_LINE;
$return.= NEW_LINE." ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^".NEW_LINE;
return $return;
}
}
?>
含まれると、次のように使用できます
include_once("scTimestamp.php");
$test=new scTimestamp();
echo $test->getDateAsString();
$test->setTimestamp(1210203200);
echo $test->getDateDifferenceFromNow();
echo $test;
$test->setTimestamp(121020320022);
echo $test->getYear();
echo $test;
そして、結果はこれが好きです。
2015 年 6 月 26 日2008 年 5 月 7 日午後 11 時 33 分 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^ @@ タイムスタンプ: 1210203200 @@ @@ 日付: 2008 年 5 月 7 日午後 11 時 33 分 @@ ^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 5804 ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ タイムスタンプ: 121020320022 @@ @@ 日付: 5804 年 12 月 25 日、午前 3 時 33 分 @@ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
このクラスは必要に応じて使用できます