PHP rich text display problems

PHP shows rich text. I am a beginner in PHP. I would like to ask you a question: how to display a binary rich text system with the database type Bolb on the webpage, originally, it was done using delphi. The field is saved as a binary richtext. now I want to display it on the webpage. how can I implement it !, Considering other problems of displaying rich text in PHP
The younger brother is a beginner in PHP. I would like to ask you a question:
How to display Bolb binary rich text in a database on a webpage
The younger brother used a system that was originally made using delphi. The field stores a binary richtext.
Now I want to know how to implement the display on the webpage!

------ Solution --------------------
Considering that other content is displayed at the same time
Therefore, it should be output to div or iframe
------ Solution --------------------
Header ("Content-Disposition: attachment; filename = myfile. rtf ");

Refer
------ Solution --------------------
The conversion depends on your format. if the format is generic, you may find the ready-made code or tool.