Hello,
If they use fixed values, you can use getWordStyles (https://www.phpdocx.com/api-documentation/docx-path/get-styles-word-contents-in-docx) to query styles:
· w:tcW tag for width in cells
· w:trHeight tag for height in rows
But the size of a cell may vary when margins, borders, and other styles are applied. But MS Word may use automatic styles, so the final size is unknown until the DOCX is opened.
Regards.