What are the potential pitfalls of using a simple "echo" to display the PDF content?

Using a simple "echo" to display PDF content can result in the PDF file being rendered as raw text in the browser instead of being displayed as a PDF document. To properly display the PDF content, you should use the appropriate content-type header and read the PDF file contents using functions like "file_get_contents" before outputting it. 

<?php
// Set the content type header to display the PDF file properly
header('Content-Type: application/pdf');

// Read the PDF file contents
$pdf_content = file_get_contents('path/to/your/pdf_file.pdf');

// Output the PDF content
echo $pdf_content;
?>

Keywords

echo PDF content display security vulnerabilities data leakage

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