What are the potential reasons for a PDF file not being displayed within an iframe on a smartphone when using PHP?

The potential reasons for a PDF file not being displayed within an iframe on a smartphone when using PHP could be related to the PDF file not being properly loaded or the MIME type not being set correctly. To solve this issue, you can try setting the correct MIME type for the PDF file before outputting it to the iframe. 

<?php
// Set the correct MIME type for PDF files
header('Content-Type: application/pdf');

// Output the PDF file content
readfile('path/to/your/pdf/file.pdf');
?>

Keywords

PDF iframe smartphone PHP display

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