{{< blocks/products/pf/main-wrap-class >}} {{< blocks/products/cells/cells-cloud-upper-banner h1="Protect Excel files using PHP" h2="Aspose.cells Cloud SDK supports decrypting, encrypting, and digi......Excel files using PHP" h2="Aspose.Cells Cloud SDK supports decrypting...digitally signing workbooks." p="Aspose.Cells Cloud REST API supports...