init

lib/PhpSpreadsheet/Worksheet/Iterator.php

@@ -0,0 +1,70 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Worksheet;
+
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+
+/**
+ * @implements \Iterator<int, Worksheet>
+ */
+class Iterator implements \Iterator
+{
+    /**
+     * Spreadsheet to iterate.
+     */
+    private Spreadsheet $subject;
+
+    /**
+     * Current iterator position.
+     */
+    private int $position = 0;
+
+    /**
+     * Create a new worksheet iterator.
+     */
+    public function __construct(Spreadsheet $subject)
+    {
+        // Set subject
+        $this->subject = $subject;
+    }
+
+    /**
+     * Rewind iterator.
+     */
+    public function rewind(): void
+    {
+        $this->position = 0;
+    }
+
+    /**
+     * Current Worksheet.
+     */
+    public function current(): Worksheet
+    {
+        return $this->subject->getSheet($this->position);
+    }
+
+    /**
+     * Current key.
+     */
+    public function key(): int
+    {
+        return $this->position;
+    }
+
+    /**
+     * Next value.
+     */
+    public function next(): void
+    {
+        ++$this->position;
+    }
+
+    /**
+     * Are there more Worksheet instances available?
+     */
+    public function valid(): bool
+    {
+        return $this->position < $this->subject->getSheetCount() && $this->position >= 0;
+    }
+}