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Combined\Datetime date/number to weekday conversion

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Convert functions for date or weekday number to weekday name or date to
weekday number
This commit is contained in:
Clemens Schwaighofer
2022-07-29 11:02:25 +09:00
parent 7e6474195b
commit 6d0e528c38
4 changed files with 228 additions and 4 deletions
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16
www/admin/class_test.datetime.php
View File

@@ -139,6 +139,22 @@ foreach ($compare_dates as $compare_date) {
. DgS::printAr(DateTime::calcDaysInterval($compare_date[0], $compare_date[1], true)) . "<br>";
}
// test date conversion
$dow = 2;
print "DOW[$dow]: " . DateTime::setWeekdayNameFromIsoDow($dow) . "<br>";
print "DOW[$dow],long: " . DateTime::setWeekdayNameFromIsoDow($dow, true) . "<br>";
$date = '2022-7-22';
print "DATE-dow[$date]: " . DateTime::setWeekdayNameFromDate($date) . "<br>";
print "DATE-dow[$date],long: " . DateTime::setWeekdayNameFromDate($date, true) . "<br>";
print "DOW-date[$date]: " . DateTime::setWeekdayNumberFromDate($date) . "<br>";
$dow = 11;
print "DOW[$dow];invalid: " . DateTime::setWeekdayNameFromIsoDow($dow) . "<br>";
print "DOW[$dow],long;invalid: " . DateTime::setWeekdayNameFromIsoDow($dow, true) . "<br>";
$date = '2022-70-242';
print "DATE-dow[$date];invalid: " . DateTime::setWeekdayNameFromDate($date) . "<br>";
print "DATE-dow[$date],long;invalid: " . DateTime::setWeekdayNameFromDate($date, true) . "<br>";
print "DOW-date[$date];invalid: " . DateTime::setWeekdayNumberFromDate($date) . "<br>";
// error message
print $log->printErrorMsg();

50
www/lib/CoreLibs/Combined/DateTime.php
View File

@@ -1,7 +1,7 @@
<?php
/*
* image thumbnail, rotate, etc
* date convert and check functions
*/
declare(strict_types=1);
@@ -193,6 +193,54 @@ class DateTime
}
}
/**
* Returns long or short day of week name based on ISO day of week number
* 1: Monday
* ...
* 7: Sunday
*
* @param int $isodow 1: Monday, 7: Sunday
* @param bool $long Default false 'Mon', if true 'Monday'
* @return string Day of week string either short 'Mon' or long 'Monday'
*/
public static function setWeekdayNameFromIsoDow(int $isodow, bool $long = false): string
{
// if not valid, set to invalid
if ($isodow < 1 || $isodow > 7) {
return $long ? 'Invalid' : 'Inv';
}
return date($long ? 'l' : 'D', strtotime("Sunday +{$isodow} days"));
}
/**
* Get the day of week Name from date
*
* @param string $date Any valid date
* @param bool $long Default false 'Mon', if true 'Monday'
* @return string Day of week string either short 'Mon' or long 'Monday'
*/
public static function setWeekdayNameFromDate(string $date, bool $long = false): string
{
if (!self::checkDate($date)) {
return $long ? 'Invalid' : 'Inv';
}
return date($long ? 'l' : 'D', strtotime($date));
}
/**
* Get the day of week Name from date
*
* @param string $date Any valid date
* @return int ISO Weekday number 1: Monday, 7: Sunday, -1 for invalid date
*/
public static function setWeekdayNumberFromDate(string $date): int
{
if (!self::checkDate($date)) {
return -1;
}
return (int)date('N', strtotime($date));
}
/**
* splits & checks date, wrap around for check_date function
*