Sample Submitted by @jr212

Address sample code submitted by @jr212 which was not working correctly.

src/PhpSpreadsheet/Cell/Cell.php

@@ -361,6 +361,18 @@ class Cell implements Stringable
                         $result = array_shift($result);
                     }
                 }
+                // if return_as_array for formula like '=sheet!cell'
+                if (is_array($result) && count($result) === 1) {
+                    $resultKey = array_keys($result)[0];
+                    $resultValue = $result[$resultKey];
+                    if (is_int($resultKey) && is_array($resultValue) && count($resultValue) === 1) {
+                        $resultKey2 = array_keys($resultValue)[0];
+                        $resultValue2 = $resultValue[$resultKey2];
+                        if (is_string($resultKey2) && !is_array($resultValue2) && preg_match('/[a-zA-Z]{1,3}/', $resultKey2) === 1) {
+                            $result = $resultValue2;
+                        }
+                    }
+                }
             } catch (SpreadsheetException $ex) {
                 if (($ex->getMessage() === 'Unable to access External Workbook') && ($this->calculatedValue !== null)) {
                     return $this->calculatedValue; // Fallback for calculations referencing external files.

src/PhpSpreadsheet/Style/NumberFormat/Formatter.php

@@ -107,7 +107,7 @@ class Formatter extends BaseFormatter
     /**
      * Convert a value in a pre-defined format to a PHP string.
      *
-     * @param null|bool|float|int|RichText|string $value Value to format
+     * @param null|array|bool|float|int|RichText|string $value Value to format
      * @param string $format Format code: see = self::FORMAT_* for predefined values;
      *                          or can be any valid MS Excel custom format string
      * @param ?array $callBack Callback function for additional formatting of string
@@ -116,6 +116,9 @@ class Formatter extends BaseFormatter
      */
     public static function toFormattedString($value, string $format, ?array $callBack = null): string
     {
+        while (is_array($value)) {
+            $value = array_shift($value);
+        }
         if (is_bool($value)) {
             return $value ? Calculation::getTRUE() : Calculation::getFALSE();
         }

src/PhpSpreadsheet/Writer/Xlsx/Worksheet.php

@@ -1402,7 +1402,12 @@ class Worksheet extends WriterPart
         }
 
         $attributes = $cell->getFormulaAttributes() ?? [];
-        $ref = array_key_exists('ref', $attributes) ? $attributes['ref'] : $cell->getCoordinate();
+        $coordinate = $cell->getCoordinate();
+        if (isset($attributes['ref'])) {
+            $ref = $this->parseRef($coordinate, $attributes['ref']);
+        } else {
+            $ref = $coordinate;
+        }
         if (is_array($calculatedValue)) {
             $attributes['t'] = 'array';
             $rows = max(1, count($calculatedValue));
@@ -1410,11 +1415,11 @@ class Worksheet extends WriterPart
             foreach ($calculatedValue as $row) {
                 $cols = max($cols, is_array($row) ? count($row) : 1);
             }
-            $firstCellArray = Coordinate::indexesFromString($ref);
+            $firstCellArray = Coordinate::indexesFromString($coordinate);
             $lastRow = $firstCellArray[1] + $rows - 1;
             $lastColumn = $firstCellArray[0] + $cols - 1;
             $lastColumnString = Coordinate::stringFromColumnIndex($lastColumn);
-            $ref .= ":$lastColumnString$lastRow";
+            $ref = "$coordinate:$lastColumnString$lastRow";
         }
         if (($attributes['t'] ?? null) === 'array') {
             $objWriter->startElement('f');
@@ -1449,6 +1454,28 @@ class Worksheet extends WriterPart
         }
     }
 
+    private function parseRef(string $coordinate, string $ref): string
+    {
+        if (preg_match('/^([A-Z]{1,3})([0-9]{1,7})(:([A-Z]{1,3})([0-9]{1,7}))?$/', $ref, $matches) !== 1) {
+            return $ref;
+        }
+        if (!isset($matches[3])) { // single cell, not range
+            return $coordinate;
+        }
+        $minRow = (int) $matches[2];
+        $maxRow = (int) $matches[5];
+        $rows = $maxRow - $minRow + 1;
+        $minCol = Coordinate::columnIndexFromString($matches[1]);
+        $maxCol = Coordinate::columnIndexFromString($matches[4]);
+        $cols = $maxCol - $minCol + 1;
+        $firstCellArray = Coordinate::indexesFromString($coordinate);
+        $lastRow = $firstCellArray[1] + $rows - 1;
+        $lastColumn = $firstCellArray[0] + $cols - 1;
+        $lastColumnString = Coordinate::stringFromColumnIndex($lastColumn);
+
+        return "$coordinate:$lastColumnString$lastRow";
+    }
+
     /**
      * Write Cell.
      *