web-base/Core/datetime.php

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<?php
function getFirstWeekDayOfMonth($d = NULL) {
if(is_null($d)) $d = date('Y-m-d H:i:s');
$dt = new DateTime($d);
$dt->modify('first day of this month');
return intval($dt->format('N'));
}
function getDayCount($d = NULL) {
if(is_null($d)) $d = date('Y-m-d H:i:s');
$dt = new DateTime($d);
$dt->modify('last day of this month');
return intval($dt->format('j'));
}
function prevMonth($d = NULL) {
if(is_null($d)) $d = date('Y-m-d H:i:s');
$dt = new DateTime($d);
$dt->modify('previous month');
return $dt->format('Y-m-d H:i:s');
}
function prevDay($d = NULL) {
if(is_null($d)) $d = date('Y-m-d H:i:s');
$dt = new DateTime($d);
$dt->modify('previous day');
return $dt->format('Y-m-d H:i:s');
}
function nextDay($d = NULL) {
if(is_null($d)) $d = date('Y-m-d H:i:s');
$dt = new DateTime($d);
$dt->modify('next day');
return $dt->format('Y-m-d H:i:s');
}
function nextMonth($d = NULL) {
if(is_null($d)) $d = date('Y-m-d H:i:s');
$dt = new DateTime($d);
$dt->modify('next month');
return $dt->format('Y-m-d H:i:s');
}
function formatPeriod($d1, $d2) {
$timeStr = dateFunction('d.m.Y H:i', $d1);
if($timeStr == dateFunction('d.m.Y H:i', $d2)) {
if(dateFunction('H:i', $d1) === '00:00') {
return dateFunction('d.m.Y', $d1);
}
} else if(dateFunction('d.m.Y', $d1) !== dateFunction('d.m.Y', $d2)) {
$timeStr .= " - " . dateFunction('d.m.Y H:i', $d2);
} elseif(dateFunction('H:i', $d1) !== dateFunction('H:i', $d2)) {
$timeStr .= " - " . dateFunction('H:i', $d2);
}
return $timeStr;
}
function now() { return new DateTime(); }
function getTime($d = NULL) { return dateFunction('H:i', $d); }
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function getHour($d = NULL) { return dateFunction('H', $d); }
function getMinute($d = NULL) { return dateFunction('i', $d); }
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function getYear($d = NULL) { return intval(dateFunction('Y', $d)); }
function getMonth($d = NULL) { return intval(dateFunction('n', $d)); }
function getDay($d = NULL) { return intval(dateFunction('d', $d)); }
function getDayOfWeek($d = NULL) { return intval(dateFunction('N', $d)); }
function getDayNumberOfWeek($d = NULL) { return intval(dateFunction('N', $d)); }
function getDateTime($d = NULL) { return dateFunction('Y-m-d H:i:s', $d); }
function getFirstDay($d = NULL) { return dateFunction('Y-m-01', $d); }
function getLastDay($d = NULL) { return dateFunction('t', $d); }
function getPrevMonth($d = NULL) { return dateFunction("-1 month", $d); }
function getLocalizedDateTime($d = NULL) { return dateFunction(L('Y/m/d H:i'), $d); }
function getJavascriptDate($d = NULL) {
if(is_null($d)) $d = date('Y-m-d H:i:s');
if(!is_a($d, "DateTime")) $d = new DateTime($d);
$year = getYear($d);
$month = getMonth($d) - 1;
$day = getDay($d);
$hour = getHour($d);
$minute = getMinute($d);
return "new Date($year, $month, $day, $hour, $minute)";
}
function getWeekDayName($day) {
$aWeekDays = array('Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday');
return L($aWeekDays[$day - 1]);
}
function getMonthName($month) {
$aMonthNames = array("January", "February", "March", "April", "May", "Juni", "July", "August", "September", "October", "November", "December");
return L($aMonthNames[$month - 1]);
}
function isInPast($d) {
$now = date('Y-m-d H:i:s');
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return datetimeDiff($d, $now) > 0;
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}
function datetimeDiff($d1, $d2) {
if(!($d1 instanceof DateTime)) $d1 = new DateTime($d1);
if(!($d2 instanceof DateTime)) $d2 = new DateTime($d2);
return $d2->getTimestamp() - $d1->getTimestamp();
}
function durationIn($d1, $d2, $str) {
if(!($d1 instanceof DateTime)) $d1 = new DateTime($d1);
if(!($d2 instanceof DateTime)) $d2 = new DateTime($d2);
$interval = $d1->diff($d2);
return intval($interval->format($str));
}
function dateFunction($str, $d = NULL) {
if(is_null($d)) $d = date('Y-m-d H:i:s');
if(!is_a($d, "DateTime")) $d = new DateTime($d);
return $d->format($str);
}
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function getPeriodString($d) {
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try {
$d = new DateTime($d);
} catch(Exception $e) {
return L("Unknown");
}
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$diff = datetimeDiff(new DateTime(), $d);
$diff = abs($diff);
if ($diff < 60) {
$str = "< %d min";
$diff = 1;
} else if($diff < 60*60) {
$diff = intval($diff / 60);
$str = "%d min.";
} else if($diff < 60*60*24) {
$diff = intval($diff / (60*60));
$str = "%d h.";
} else {
$diff = intval($diff / (60*60*24));
$str = "%d d.";
}
return L(sprintf($str, $diff));
}
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function formatDateTime($d) {
$format = L("Y/m/d H:i:s");
return apply_format($d, $format);
}
function formatTime($d) {
$format = L("H:i:s");
return apply_format($d, $format);
}
function formatDate($d) {
$format = L("Y/m/d");
return apply_format($d, $format);
}
function apply_format($d, $fmt) {
try {
$dt = new DateTime($d);
return $dt->format($fmt);
} catch(Exception $e) {
return L("Unknown");
}
}