Vendor/phpspreadsheet/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Reader/Ods.php
public function listWorksheetInfo($pFilename)
    {
        File::assertFile($pFilename);

        $worksheetInfo = [];

        $zip = new ZipArchive();
        if (!$zip->open($pFilename)) {
            throw new Exception('Could not open ' . $pFilename . ' for reading! Error opening file.');
        }

        $xml = new XMLReader();
        $xml->xml(
            $this->securityScanFile('zip://' . realpath($pFilename) . '#content.xml'),
            null,
            Settings::getLibXmlLoaderOptions()
        );
        $xml->setParserProperty(2, true);

        // Step into the first level of content of the XML
        $xml->read();
        while ($xml->read()) {
            // Quickly jump through to the office:body node
            while ($xml->name !== 'office:body') {
                if ($xml->isEmptyElement) {
                    $xml->read();
                } else {
                    $xml->next();
                }
            }
            // Now read each node until we find our first table:table node
            while ($xml->read()) {
                if ($xml->name == 'table:table' && $xml->nodeType == XMLReader::ELEMENT) {
                    $worksheetNames[] = $xml->getAttribute('table:name');

                    $tmpInfo = [
                        'worksheetName' => $xml->getAttribute('table:name'),
                        'lastColumnLetter' => 'A',
                        'lastColumnIndex' => 0,
                        'totalRows' => 0,
                        'totalColumns' => 0,
                    ];

                    // Loop through each child node of the table:table element reading
                    $currCells = 0;
                    do {
                        $xml->read();
                        if ($xml->name == 'table:table-row' && $xml->nodeType == XMLReader::ELEMENT) {
                            $rowspan = $xml->getAttribute('table:number-rows-repeated');
                            $rowspan = empty($rowspan) ? 1 : $rowspan;
                            $tmpInfo['totalRows'] += $rowspan;
                            $tmpInfo['totalColumns'] = max($tmpInfo['totalColumns'], $currCells);
                            $currCells = 0;
                            // Step into the row
                            $xml->read();
                            do {
                                if ($xml->name == 'table:table-cell' && $xml->nodeType == XMLReader::ELEMENT) {
                                    if (!$xml->isEmptyElement) {
                                        ++$currCells;
                                        $xml->next();
                                    } else {
                                        $xml->read();
                                    }
                                } elseif ($xml->name == 'table:covered-table-cell' && $xml->nodeType == XMLReader::ELEMENT) {
                                    $mergeSize = $xml->getAttribute('table:number-columns-repeated');
                                    $currCells += (int) $mergeSize;
                                    $xml->read();
                                }
                            } while ($xml->name != 'table:table-row');
                        }
                    } while ($xml->name != 'table:table');

                    $tmpInfo['totalColumns'] = max($tmpInfo['totalColumns'], $currCells);
                    $tmpInfo['lastColumnIndex'] = $tmpInfo['totalColumns'] - 1;
                    $tmpInfo['lastColumnLetter'] = Coordinate::stringFromColumnIndex($tmpInfo['lastColumnIndex'] + 1);
                    $worksheetInfo[] = $tmpInfo;
                }
            }
        }

        return $worksheetInfo;
    }
public function listWorksheetInfo($pFilename)
    {
        File::assertFile($pFilename);

        $worksheetInfo = [];

        $zip = new ZipArchive();
        if (!$zip->open($pFilename)) {
            throw new Exception('Could not open ' . $pFilename . ' for reading! Error opening file.');
        }

        $xml = new XMLReader();
        $xml->xml(
            $this->securityScanFile('zip://' . realpath($pFilename) . '#content.xml'),
            null,
            Settings::getLibXmlLoaderOptions()
        );
        $xml->setParserProperty(2, true);

        // Step into the first level of content of the XML
        $xml->read();
        while ($xml->read()) {
            // Quickly jump through to the office:body node
            while ($xml->name !== 'office:body') {
                if ($xml->isEmptyElement) {
                    $xml->read();
                } else {
                    $xml->next();
                }
            }
            // Now read each node until we find our first table:table node
            while ($xml->read()) {
                if ($xml->name == 'table:table' && $xml->nodeType == XMLReader::ELEMENT) {
                    $worksheetNames[] = $xml->getAttribute('table:name');

                    $tmpInfo = [
                        'worksheetName' => $xml->getAttribute('table:name'),
                        'lastColumnLetter' => 'A',
                        'lastColumnIndex' => 0,
                        'totalRows' => 0,
                        'totalColumns' => 0,
                    ];

                    // Loop through each child node of the table:table element reading
                    $currCells = 0;
                    do {
                        $xml->read();
                        if ($xml->name == 'table:table-row' && $xml->nodeType == XMLReader::ELEMENT) {
                            $rowspan = $xml->getAttribute('table:number-rows-repeated');
                            $rowspan = empty($rowspan) ? 1 : $rowspan;
                            $tmpInfo['totalRows'] += $rowspan;
                            $tmpInfo['totalColumns'] = max($tmpInfo['totalColumns'], $currCells);
                            $currCells = 0;
                            // Step into the row
                            $xml->read();
                            do {
                                if ($xml->name == 'table:table-cell' && $xml->nodeType == XMLReader::ELEMENT) {
                                    if (!$xml->isEmptyElement) {
                                        ++$currCells;
                                        $xml->next();
                                    } else {
                                        $xml->read();
                                    }
                                } elseif ($xml->name == 'table:covered-table-cell' && $xml->nodeType == XMLReader::ELEMENT) {
                                    $mergeSize = $xml->getAttribute('table:number-columns-repeated');
                                    $currCells += (int) $mergeSize;
                                    $xml->read();
                                }
                            } while ($xml->name != 'table:table-row');
                        }
                    } while ($xml->name != 'table:table');

                    $tmpInfo['totalColumns'] = max($tmpInfo['totalColumns'], $currCells);
                    $tmpInfo['lastColumnIndex'] = $tmpInfo['totalColumns'] - 1;
                    $tmpInfo['lastColumnLetter'] = Coordinate::stringFromColumnIndex($tmpInfo['lastColumnIndex'] + 1);
                    $worksheetInfo[] = $tmpInfo;
                }
            }
        }

        return $worksheetInfo;
    }
Return worksheet info (Name, Last Column Letter, Last Column Index, Total Rows, Total Columns).

@param string $pFilename

@throws Exception

@return array