diff --git a/CHANGELOG.PHPExcel.md b/CHANGELOG.PHPExcel.md
index c92feda9..3c299020 100644
--- a/CHANGELOG.PHPExcel.md
+++ b/CHANGELOG.PHPExcel.md
@@ -1518,7 +1518,7 @@ documentation for more information on entering dates into a cell.
 ### Bugfixes
 
 - PHPExcel->removeSheetByIndex now re-orders sheets after deletion, so no array indexes are lost - @JV
-- PHPExcel_Writer_Excel2007_Worksheet::_writeCols() used direct assignment to $pSheet->getColumnDimension('A')->Width instead of ~~~~$pSheet->getColumnDimension('A')->setWidth() - @JV
+- PHPExcel_Writer_Excel2007_Worksheet::_writeCols() used direct assignment to $pSheet->getColumnDimension('A')->Width instead of $pSheet->getColumnDimension('A')->setWidth() - @JV
 - DocumentProperties used $this->LastModifiedBy instead of $this->_lastModifiedBy. - @JV
 
 ### General
diff --git a/src/PhpSpreadsheet/Calculation/Calculation.php b/src/PhpSpreadsheet/Calculation/Calculation.php
index f9c4fc0c..15bb8100 100644
--- a/src/PhpSpreadsheet/Calculation/Calculation.php
+++ b/src/PhpSpreadsheet/Calculation/Calculation.php
@@ -4724,7 +4724,7 @@ class Calculation
                     }
                 } else {
                     if ($pCell === null) {
-                        //                        We can't access the cell, so return a REF error
+                        // We can't access the cell, so return a REF error
                         $cellValue = Functions::REF();
                     } else {
                         $cellRef = $matches[6] . $matches[7];
@@ -5307,7 +5307,6 @@ class Calculation
         $returnValue = [];
 
         if ($worksheet !== null) {
-            $worksheetName = $worksheet->getTitle();
             if (strpos($range, '!') !== false) {
                 [$worksheetName, $range] = Worksheet::extractSheetTitle($range, true);
                 $worksheet = $this->spreadsheet->getSheetByName($worksheetName);
diff --git a/src/PhpSpreadsheet/Cell/Coordinate.php b/src/PhpSpreadsheet/Cell/Coordinate.php
index 33b0c214..df64c557 100644
--- a/src/PhpSpreadsheet/Cell/Coordinate.php
+++ b/src/PhpSpreadsheet/Cell/Coordinate.php
@@ -156,24 +156,24 @@ abstract class Coordinate
     /**
      * Build range from coordinate strings.
      *
-     * @param array $rangea Array containg one or more arrays containing one or two coordinate strings
+     * @param array $range Array containing one or more arrays containing one or two coordinate strings
      *
      * @return string String representation of $pRange
      */
-    public static function buildRange(array $rangea)
+    public static function buildRange(array $range)
     {
         // Verify range
-        if (empty($rangea) || !is_array($rangea[0])) {
+        if (empty($range) || !is_array($range[0])) {
             throw new Exception('Range does not contain any information');
         }
 
         // Build range
-        $counter = count($rangea);
+        $counter = count($range);
         for ($i = 0; $i < $counter; ++$i) {
-            $rangea[$i] = implode(':', $rangea[$i]);
+            $range[$i] = implode(':', $range[$i]);
         }
 
-        return implode(',', $rangea);
+        return implode(',', $range);
     }
 
     /**
diff --git a/src/PhpSpreadsheet/Reader/Csv.php b/src/PhpSpreadsheet/Reader/Csv.php
index e0f2c451..50426c4f 100644
--- a/src/PhpSpreadsheet/Reader/Csv.php
+++ b/src/PhpSpreadsheet/Reader/Csv.php
@@ -427,19 +427,6 @@ class Csv extends BaseReader
         return $this->escapeCharacter;
     }
 
-    /**
-     * Scrutinizer believes, incorrectly, that the specific pathinfo
-     * call in canRead can return something other than an array.
-     * Phpstan knows better.
-     * This function satisfies both.
-     *
-     * @param mixed $extension
-     */
-    private static function extractStringLower($extension): string
-    {
-        return is_string($extension) ? strtolower($extension) : '';
-    }
-
     /**
      * Can the current IReader read the file?
      */
diff --git a/src/PhpSpreadsheet/Shared/Drawing.php b/src/PhpSpreadsheet/Shared/Drawing.php
index 04ce1430..1d2a1537 100644
--- a/src/PhpSpreadsheet/Shared/Drawing.php
+++ b/src/PhpSpreadsheet/Shared/Drawing.php
@@ -143,7 +143,7 @@ class Drawing
      */
     public static function angleToDegrees($angle)
     {
-        $pValue = (int) $angle;
+        $angle = (int) $angle;
         if ($angle != 0) {
             return (int) round($angle / 60000);
         }
diff --git a/src/PhpSpreadsheet/Writer/Xlsx/Chart.php b/src/PhpSpreadsheet/Writer/Xlsx/Chart.php
index e65f6e34..8cefe4cc 100644
--- a/src/PhpSpreadsheet/Writer/Xlsx/Chart.php
+++ b/src/PhpSpreadsheet/Writer/Xlsx/Chart.php
@@ -75,7 +75,7 @@ class Chart extends WriterPart
         $objWriter->writeAttribute('val', 0);
         $objWriter->endElement();
 
-        $this->writePlotArea($objWriter, $pChart->getWorksheet(), $pChart->getPlotArea(), $pChart->getXAxisLabel(), $pChart->getYAxisLabel(), $pChart->getChartAxisX(), $pChart->getChartAxisY(), $pChart->getMajorGridlines(), $pChart->getMinorGridlines());
+        $this->writePlotArea($objWriter, $pChart->getPlotArea(), $pChart->getXAxisLabel(), $pChart->getYAxisLabel(), $pChart->getChartAxisX(), $pChart->getChartAxisY(), $pChart->getMajorGridlines(), $pChart->getMinorGridlines());
 
         $this->writeLegend($objWriter, $pChart->getLegend());
 
@@ -202,7 +202,7 @@ class Chart extends WriterPart
      * @param Axis $xAxis
      * @param Axis $yAxis
      */
-    private function writePlotArea(XMLWriter $objWriter, \PhpOffice\PhpSpreadsheet\Worksheet\Worksheet $worksheet, PlotArea $plotArea, ?Title $xAxisLabel = null, ?Title $yAxisLabel = null, ?Axis $xAxis = null, ?Axis $yAxis = null, ?GridLines $majorGridlines = null, ?GridLines $minorGridlines = null): void
+    private function writePlotArea(XMLWriter $objWriter, PlotArea $plotArea, ?Title $xAxisLabel = null, ?Title $yAxisLabel = null, ?Axis $xAxis = null, ?Axis $yAxis = null, ?GridLines $majorGridlines = null, ?GridLines $minorGridlines = null): void
     {
         if ($plotArea === null) {
             return;