Vendor/phpspreadsheet/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Writer/Xlsx/Drawing.php
public function writeDrawings(\PhpOffice\PhpSpreadsheet\Worksheet\Worksheet $pWorksheet, $includeCharts = false)
    {
        // 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');

        // xdr:wsDr
        $objWriter->startElement('xdr:wsDr');
        $objWriter->writeAttribute('xmlns:xdr', 'http://schemas.openxmlformats.org/drawingml/2006/spreadsheetDrawing');
        $objWriter->writeAttribute('xmlns:a', 'http://schemas.openxmlformats.org/drawingml/2006/main');

        // Loop through images and write drawings
        $i = 1;
        $iterator = $pWorksheet->getDrawingCollection()->getIterator();
        while ($iterator->valid()) {
            $this->writeDrawing($objWriter, $iterator->current(), $i);

            $iterator->next();
            ++$i;
        }

        if ($includeCharts) {
            $chartCount = $pWorksheet->getChartCount();
            // Loop through charts and write the chart position
            if ($chartCount > 0) {
                for ($c = 0; $c < $chartCount; ++$c) {
                    $this->writeChart($objWriter, $pWorksheet->getChartByIndex($c), $c + $i);
                }
            }
        }

        $objWriter->endElement();

        // Return
        return $objWriter->getData();
    }
public function writeDrawings(\PhpOffice\PhpSpreadsheet\Worksheet\Worksheet $pWorksheet, $includeCharts = false)
    {
        // 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');

        // xdr:wsDr
        $objWriter->startElement('xdr:wsDr');
        $objWriter->writeAttribute('xmlns:xdr', 'http://schemas.openxmlformats.org/drawingml/2006/spreadsheetDrawing');
        $objWriter->writeAttribute('xmlns:a', 'http://schemas.openxmlformats.org/drawingml/2006/main');

        // Loop through images and write drawings
        $i = 1;
        $iterator = $pWorksheet->getDrawingCollection()->getIterator();
        while ($iterator->valid()) {
            $this->writeDrawing($objWriter, $iterator->current(), $i);

            $iterator->next();
            ++$i;
        }

        if ($includeCharts) {
            $chartCount = $pWorksheet->getChartCount();
            // Loop through charts and write the chart position
            if ($chartCount > 0) {
                for ($c = 0; $c < $chartCount; ++$c) {
                    $this->writeChart($objWriter, $pWorksheet->getChartByIndex($c), $c + $i);
                }
            }
        }

        $objWriter->endElement();

        // Return
        return $objWriter->getData();
    }
Write drawings to XML format.

@param \PhpOffice\PhpSpreadsheet\Worksheet\Worksheet $pWorksheet
@param bool $includeCharts Flag indicating if we should include drawing details for charts

@throws WriterException

@return string XML Output