Rename *Number to *Index

src/Spout/Writer/Internal/XLSX/Workbook.php

@@ -67,8 +67,8 @@ class Workbook
      */
     public function addNewSheet()
     {
-        $newSheetNumber = count($this->worksheets);
-        $sheet = new Sheet($newSheetNumber);
+        $newSheetIndex = count($this->worksheets);
+        $sheet = new Sheet($newSheetIndex);
 
         $worksheetFilesFolder = $this->fileSystemHelper->getXlWorksheetsFolder();
         $worksheet = new Worksheet($sheet, $worksheetFilesFolder, $this->sharedStringsHelper, $this->shouldUseInlineStrings);

src/Spout/Writer/Internal/XLSX/Worksheet.php

@@ -96,8 +96,8 @@ EOD;
      */
     public function getId()
     {
-        // sheet number is zero-based, while ID is 1-based
-        return $this->externalSheet->getNumber() + 1;
+        // sheet index is zero-based, while ID is 1-based
+        return $this->externalSheet->getIndex() + 1;
     }
 
     /**

src/Spout/Writer/Sheet.php

@@ -12,27 +12,27 @@ class Sheet
 {
     const DEFAULT_SHEET_NAME_PREFIX = 'Sheet';
 
-    /** @var int Number of the sheet, based on order of creation (zero-based) */
-    protected $sheetNumber;
+    /** @var int Index of the sheet, based on order of creation (zero-based) */
+    protected $index;
 
     /** @var string Name of the sheet */
     protected $name;
 
     /**
-     * @param $sheetNumber Number of the sheet, based on order of creation (zero-based)
+     * @param int $sheetIndex Index of the sheet, based on order of creation (zero-based)
      */
-    function __construct($sheetNumber)
+    function __construct($sheetIndex)
     {
-        $this->sheetNumber = $sheetNumber;
-        $this->name = self::DEFAULT_SHEET_NAME_PREFIX . ($sheetNumber + 1);
+        $this->index = $sheetIndex;
+        $this->name = self::DEFAULT_SHEET_NAME_PREFIX . ($sheetIndex + 1);
     }
 
     /**
-     * @return int Number of the sheet, based on order of creation (zero-based)
+     * @return int Index of the sheet, based on order of creation (zero-based)
      */
-    public function getNumber()
+    public function getIndex()
     {
-        return $this->sheetNumber;
+        return $this->index;
     }
 
     /**