Some header manipulations using PHP

header-samples.php

<?php

	# 301 Moved Permanently (redirect)
	
	header('HTTP/1.1 301 Moved Permanently');
	header('Location: http://www.domain.com/newpage.html');
	
	# 404 Page Not Found
	
	header('HTTP/1.1 404 Not Found');
	
	# 503 Service not available

	header('HTTP/1.1 503 Service Temporarily Unavailable');
	header('Status: 503 Service Temporarily Unavailable');
	header('Retry-After: 60');

	# Displaying a PDF file
	
	header('Content-Type: application/pdf');
	echo file_get_contents('example.pdf');
	
	# Force browser to not cache
	
	header('Expires: Sat, 26 Jul 1997 05:00:00 GMT');
	header('Cache-Control: no-store, no-cache, must-revalidate');
	header('Cache-Control: pre-check=0, post-check=0, max-age=0');
	header('Pragma: no-cache'); 

	# Force browser to make file 'downloadable'
	
	$file = "file.zip";
	header('Content-Disposition: attachment; filename=' . urlencode($file));   
	header('Content-Type: application/force-download');
	header('Content-Type: application/octet-stream');
	header('Content-Type: application/download');
	header('Content-Description: File Transfer');
	header('Content-Length: ' . filesize($file));
	echo file_get_contents($file);

	# Cya :P
	
?>