How to write a pdf using just php without available pdf class like fpdf, tcpdf etc?
<p>How do I write a PDF using just php without using any third party libraries/pdf classes that are available like FPDF, TCPDF etc?</p>

<p>Can you tell me the format of a PDF file?  What are the objects like text, image, style element, etc are used in PDF file?</p>
