Ensure multiplication is performed on a non-array value (#2964)

* Ensure multiplication is performed on a non-array value

* Simplify formula
Numbers should be numbers

* Provide test coverage for SUM combined with INDEX/MATCH

* PHPStan

phpstan-baseline.neon

@@ -2377,7 +2377,7 @@ parameters:
 
 		-
 			message: "#^Result of && is always false\\.$#"
-			count: 10
+			count: 11
 			path: src/PhpSpreadsheet/Shared/JAMA/Matrix.php
 
 		-

src/PhpSpreadsheet/Shared/JAMA/Matrix.php

@@ -3,6 +3,7 @@
 namespace PhpOffice\PhpSpreadsheet\Shared\JAMA;
 
 use PhpOffice\PhpSpreadsheet\Calculation\Exception as CalculationException;
+use PhpOffice\PhpSpreadsheet\Calculation\Functions;
 use PhpOffice\PhpSpreadsheet\Calculation\Information\ExcelError;
 use PhpOffice\PhpSpreadsheet\Shared\StringHelper;
 
@@ -742,6 +743,9 @@ class Matrix
                         $value = trim($value, '"');
                         $validValues &= StringHelper::convertToNumberIfFraction($value);
                     }
+                    if (!is_numeric($value) && is_array($value)) {
+                        $value = Functions::flattenArray($value)[0];
+                    }
                     if ($validValues) {
                         $this->A[$i][$j] *= $value;
                     } else {

tests/PhpSpreadsheetTests/Calculation/Functions/MathTrig/SumTest.php

@@ -2,6 +2,8 @@
 
 namespace PhpOffice\PhpSpreadsheetTests\Calculation\Functions\MathTrig;
 
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+
 class SumTest extends AllSetupTeardown
 {
     /**
@@ -44,4 +46,27 @@ class SumTest extends AllSetupTeardown
     {
         return require 'tests/data/Calculation/MathTrig/SUMLITERALS.php';
     }
+
+    public function testSumWithIndexMatch(): void
+    {
+        $spreadsheet = new Spreadsheet();
+        $sheet1 = $spreadsheet->getActiveSheet();
+        $sheet1->setTitle('Formula');
+        $sheet1->fromArray(
+            [
+                ['Number', 'Formula'],
+                [83, '=SUM(4 * INDEX(Lookup!B2, MATCH(A2, Lookup!A2, 0)))'],
+            ]
+        );
+        $sheet2 = $spreadsheet->createSheet();
+        $sheet2->setTitle('Lookup');
+        $sheet2->fromArray(
+            [
+                ['Lookup', 'Match'],
+                [83, 16],
+            ]
+        );
+        self::assertSame(64, $sheet1->getCell('B2')->getCalculatedValue());
+        $spreadsheet->disconnectWorksheets();
+    }
 }

tests/PhpSpreadsheetTests/Calculation/Functions/TextData/ConcatenateTest.php

@@ -41,7 +41,7 @@ class ConcatenateTest extends AllSetupTeardown
         $sheet1->fromArray(
             [
                 ['Number', 'Formula'],
-                ['52101293', '=CONCAT(INDEX(Lookup!$B$2, MATCH($A2, Lookup!$A$2, 0)))'],
+                [52101293, '=CONCAT(INDEX(Lookup!B2, MATCH(A2, Lookup!A2, 0)))'],
             ]
         );
         $sheet2 = $spreadsheet->createSheet();
@@ -49,7 +49,7 @@ class ConcatenateTest extends AllSetupTeardown
         $sheet2->fromArray(
             [
                 ['Lookup', 'Match'],
-                ['52101293', 'PHP'],
+                [52101293, 'PHP'],
             ]
         );
         self::assertSame('PHP', $sheet1->getCell('B2')->getCalculatedValue());