note 87010 modified in function.mktime by danbrown
| From: | danbrown@php.net | Date: | Fri, 14 Nov 2008 16:48:01 +0000 |
| Subject: | note 87010 modified in function.mktime by danbrown | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-146535@lists.php.net to get a copy of this message | ||
<?php
//example of functions to know if a date/time value is in summer hour or in winter hour
//====================
function getChgWinDate($dt){
$y=substr($dt,0,4);
for($i=31;$i>20;$i--){
$ts=mktime(3,0,0,10,$i,$y);
$dy=date('D',$ts);
if($dy=='Sun') return($y.'/10/'.$i.' 03:00:00');
}
}
//====================
function getChgSumDate($dt){
$y=substr($dt,0,4);
for($i=31;$i>20;$i--){
$ts=mktime(2,0,0,10,$i,$y);
$dy=date('D',$ts);
if($dy=='Sun') return($y.'/03/'.$i.' 02:00:00');
}
}
//====================
function isSummerDate($dt){
$b1=getChgWinDate($dt);
$b2=getChgSumDate($dt);
if($dt>=$b2&&$dt<$b1) return(true);
return(false);
}
//====================
function isWinterDate($dt){
return(!isSummerDate($dt));
}
//====================
$dt = '2008/10/26 03:15:16';
if( isSummerDate($dt) ){
echo $dt . " is summer hour in france";
}else{
echo $dt . " is winter hour in france";
}
?>
--was--
//example of functions to know if a date/time value is in summer hour or in winter hour
//====================
function getChgWinDate($dt){
$y=substr($dt,0,4);
for($i=31;$i>20;$i--){
$ts=mktime(3,0,0,10,$i,$y);
$dy=date('D',$ts);
if($dy=='Sun') return($y.'/10/'.$i.' 03:00:00');
}
}
//====================
function getChgSumDate($dt){
$y=substr($dt,0,4);
for($i=31;$i>20;$i--){
$ts=mktime(2,0,0,10,$i,$y);
$dy=date('D',$ts);
if($dy=='Sun') return($y.'/03/'.$i.' 02:00:00');
}
}
//====================
function isSummerDate($dt){
$b1=getChgWinDate($dt);
$b2=getChgSumDate($dt);
if($dt>=$b2&&$dt<$b1) return(true);
return(false);
}
//====================
function isWinterDate($dt){
return(!isSummerDate($dt));
}
//====================
$dt = '2008/10/26 03:15:16';
if( isSummerDate($dt) ){
echo $dt . " is summer hour in france";
}else{
echo $dt . " is winter hour in france";
}
http://php.net/manual/en/function.mktime.php