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--- docs:programming:php:pdf_http_headers [2008/05/27 10:01] – created billh
+++ docs:programming:php:pdf_http_headers [2009/11/20 20:42] (current) – billh
@@ Line 14: / Line 14: @@
 // or update the output by another method
 $time = time();
-header("Expires: " . gmdate('D, d M Y H:i:s', time() + 6) . " GMT");
+header("Expires: " . gmdate('D, d M Y H:i:s', $time + 6) . " GMT");
-header("Last-Modified: " . gmdate('D, d M Y H:i:s', time()) . " GMT");
+header("Last-Modified: " . gmdate('D, d M Y H:i:s', $time) . " GMT");
 header("Content-Type: application/pdf");
@@ Line 22: / Line 22: @@
 header("Content-Transfer-Encoding: binary");
 </code>
+===== Making IE Accept File Downloads =====
+Over SSL (https:), you may get a message in IE of "The file could not be written to the cache".  This can be resolved by the following:
+  - make sure to uncheck Tools -> Internet Options -> Advanced -> Do not save encrypted pages to disk
+  - use the following (notice it is before session_start()):<code php>
+if(strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE')) {
+    session_cache_limiter("public");
+}
+session_start();
+</code>
+===== See Also =====
+  * [[docs:browsers:cache_issues]]
+===== External Links =====
+  * [[http://joseph.randomnetworks.com/archives/2004/10/01/making-ie-accept-file-downloads/|Making IE Accept File Downloads]]