Alter Version

vendor/PhpSpreadsheet/Writer/Xlsx/RelsVBA.php

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+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Writer\Xlsx;
+
+use PhpOffice\PhpSpreadsheet\Shared\XMLWriter;
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+
+class RelsVBA extends WriterPart
+{
+    /**
+     * Write relationships for a signed VBA Project.
+     *
+     * @return string XML Output
+     */
+    public function writeVBARelationships(Spreadsheet $spreadsheet)
+    {
+        // Create XML writer
+        $objWriter = null;
+        if ($this->getParentWriter()->getUseDiskCaching()) {
+            $objWriter = new XMLWriter(XMLWriter::STORAGE_DISK, $this->getParentWriter()->getDiskCachingDirectory());
+        } else {
+            $objWriter = new XMLWriter(XMLWriter::STORAGE_MEMORY);
+        }
+
+        // XML header
+        $objWriter->startDocument('1.0', 'UTF-8', 'yes');
+
+        // Relationships
+        $objWriter->startElement('Relationships');
+        $objWriter->writeAttribute('xmlns', 'http://schemas.openxmlformats.org/package/2006/relationships');
+        $objWriter->startElement('Relationship');
+        $objWriter->writeAttribute('Id', 'rId1');
+        $objWriter->writeAttribute('Type', 'http://schemas.microsoft.com/office/2006/relationships/vbaProjectSignature');
+        $objWriter->writeAttribute('Target', 'vbaProjectSignature.bin');
+        $objWriter->endElement();
+        $objWriter->endElement();
+
+        return $objWriter->getData();
+    }
+}