first commit

2023-10-16 12:58:41 +08:00
commit 3a09f3ca67
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+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Calculation\DateTimeExcel;
+
+use DateTimeInterface;
+use PhpOffice\PhpSpreadsheet\Calculation\Exception;
+use PhpOffice\PhpSpreadsheet\Calculation\Functions;
+use PhpOffice\PhpSpreadsheet\Shared\Date as SharedDateHelper;
+
+class Days
+{
+    /**
+     * DAYS.
+     *
+     * Returns the number of days between two dates
+     *
+     * Excel Function:
+     *        DAYS(endDate, startDate)
+     *
+     * @param DateTimeInterface|float|int|string $endDate Excel date serial value (float),
+     * PHP date timestamp (integer), PHP DateTime object, or a standard date string
+     * @param DateTimeInterface|float|int|string $startDate Excel date serial value (float),
+     * PHP date timestamp (integer), PHP DateTime object, or a standard date string
+     *
+     * @return int|string Number of days between start date and end date or an error
+     */
+    public static function between($endDate, $startDate)
+    {
+        try {
+            $startDate = Helpers::getDateValue($startDate);
+            $endDate = Helpers::getDateValue($endDate);
+        } catch (Exception $e) {
+            return $e->getMessage();
+        }
+
+        // Execute function
+        $PHPStartDateObject = SharedDateHelper::excelToDateTimeObject($startDate);
+        $PHPEndDateObject = SharedDateHelper::excelToDateTimeObject($endDate);
+
+        $days = Functions::VALUE();
+        $diff = $PHPStartDateObject->diff($PHPEndDateObject);
+        if ($diff !== false && !is_bool($diff->days)) {
+            $days = $diff->days;
+            if ($diff->invert) {
+                $days = -$days;
+            }
+        }
+
+        return $days;
+    }
+}