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Calcualtion - DATEDIF - fix result for Y & YM units (#1466) 

Bugfix for negative results and too small results

2000-02-02 => 2001-02-01
 > DATEDIF with Y unit: 0 year (returned -1 before fix)
 > DATEDIF with YM unit: 11 months (returned -1 before fix)
This commit is contained in:
Alban Duval 2020-05-25 21:33:48 +02:00 committed by GitHub
parent 5a92a5f6b4
commit 7ed96e0be1
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 19 additions and 25 deletions
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30
src/PhpSpreadsheet/Calculation/DateTime.php
View File

@ -668,30 +668,19 @@ class DateTime
$endMonths = $PHPEndDateObject->format('n');
$endYears = $PHPEndDateObject->format('Y');
$PHPDiffDateObject = $PHPEndDateObject->diff($PHPStartDateObject);
switch ($unit) {
case 'D':
$retVal = (int) $difference;
break;
case 'M':
$retVal = (int) ($endMonths - $startMonths) + ((int) ($endYears - $startYears) * 12);
// We're only interested in full months
if ($endDays < $startDays) {
--$retVal;
}
$retVal = (int) 12 * $PHPDiffDateObject->format('%y') + $PHPDiffDateObject->format('%m');
break;
case 'Y':
$retVal = (int) ($endYears - $startYears);
// We're only interested in full months
if ($endMonths < $startMonths) {
--$retVal;
} elseif (($endMonths == $startMonths) && ($endDays < $startDays)) {
// Remove start month
--$retVal;
// Remove end month
--$retVal;
}
$retVal = (int) $PHPDiffDateObject->format('%y');
break;
case 'MD':
@ -701,19 +690,12 @@ class DateTime
$adjustDays = $PHPEndDateObject->format('j');
$retVal += ($adjustDays - $startDays);
} else {
$retVal = $endDays - $startDays;
$retVal = (int) $PHPDiffDateObject->format('%d');
}
break;
case 'YM':
$retVal = (int) ($endMonths - $startMonths);
if ($retVal < 0) {
$retVal += 12;
}
// We're only interested in full months
if ($endDays < $startDays) {
--$retVal;
}
$retVal = (int) $PHPDiffDateObject->format('%m');
break;
case 'YD':

14
tests/data/Calculation/DateTime/DATEDIF.php
View File

@ -393,6 +393,10 @@ return [
1,
'19-12-1960', '26-01-2012', 'YM',
],
[
11,
'19-12-1960', '26-11-1962', 'YM',
],
[
38,
'19-12-1960', '26-01-2012', 'YD',
@ -402,7 +406,15 @@ return [
'19-12-1960', '26-01-2012', 'MD',
],
[
50,
0,
'19-12-1960', '12-12-1961', 'Y',
],
[
1,
'19-12-1960', '12-12-1962', 'Y',
],
[
51,
'19-12-1960', '12-12-2012', 'Y',
],
[