i have open pdf file in php and how can secure it ? no one can neither download nor print it
<p>I run PDF file through localhost in php there is a option in browser of printing the PDF and I dont want it to be print. 
Here is my code:</p>

<pre><code>header('Content-type: application/pdf');
readfile('The C# 4.0 complete reference.pdf');
die();
</code></pre>

<p>kindly help me</p>