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Minor performance improvement to date conversion routines

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git-svn-id: https://phpexcel.svn.codeplex.com/svn/trunk@71598 2327b42d-5241-43d6-9e2a-de5ac946f064
This commit is contained in:
Mark Baker 2011-04-09 18:16:08 +00:00
parent 70f773f0ca
commit 631834b4d6
1 changed files with 3 additions and 3 deletions
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6
Classes/PHPExcel/Shared/Date.php
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@ -91,14 +91,14 @@ class PHPExcel_Shared_Date
// Perform conversion // Perform conversion
if ($dateValue >= 1) { if ($dateValue >= 1) {
$utcDays = $dateValue - $myExcelBaseDate; $utcDays = $dateValue - $myExcelBaseDate;
$returnValue = round($utcDays * 24 * 60 * 60); $returnValue = round($utcDays * 86400);
if (($returnValue <= PHP_INT_MAX) && ($returnValue >= -PHP_INT_MAX)) { if (($returnValue <= PHP_INT_MAX) && ($returnValue >= -PHP_INT_MAX)) {
$returnValue = (integer) $returnValue; $returnValue = (integer) $returnValue;
} }
} else { } else {
$hours = round($dateValue * 24); $hours = round($dateValue * 24);
$mins = round($dateValue * 24 * 60) - round($hours * 60); $mins = round($dateValue * 1440) - round($hours * 60);
$secs = round($dateValue * 24 * 60 * 60) - round($hours * 60 * 60) - round($mins * 60); $secs = round($dateValue * 86400) - round($hours * 3600) - round($mins * 60);
$returnValue = (integer) gmmktime($hours, $mins, $secs); $returnValue = (integer) gmmktime($hours, $mins, $secs);
} }