{{< blocks/products/cells/cells-cloud-banner h1="Convert TXT to MHTML" h2="PHP library for converting TXT to MHTML" p="Use the Conversion API of of Cells Cloud to create customized spreadsheet work......getenv("ProductClientSecret")); $path ='Book1.txt'; $format ='mhtml';...$this->instance->cellsWorkbookPutConv($path ,$format, $password, $outPath);...