PHP PDF CONTENT-TYPE
Example 2 on w3schools shows what you are trying to achieve. php header(" Content-type:application/pdf"); // It will be called. moved permanently (redirect). php. header('HTTP/ php. header('Content-Type: image/bmp');?> PDF (output pdf with php). php // We'll be outputting a PDF header('Content-Type: application/pdf'); // It will be called resourceone.info header('Content-Disposition: attachment;.
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mime_content_type (string $filename): string. Returns the MIME content type for a file as determined by using information from the resourceone.info file. php $file = 'path/to/PDF/resourceone.info'; $filename = 'resourceone.info'; header('Content- type: application/pdf'); header('Content-Disposition: inline;. Because these pdf's are rather important, and they are updated frequently, I was wondering if it is possible to disable the save-button in the.
Adobe or a third party might have something like this no?
Could be worthwhile doing a search me thinks. Thank you for your reply, Dr Livingston Meanwhile I've been searching the readme files of the application that is being used for making the pdf files.
In the chapter security, they let you the choise between several possibilities, one being the option "disable printing".
I've tried this option and apparently it disables the save button too. I believe my question is answered Thanks again, Ann.
Yet, at least half of them share common errors; in many cases programmers simply copy the code from something that works, without even attempting to understand what it really does. What follows is not a complete working download script, but rather a set of issues you should be aware about and that will allow you to write better code.
Guessing is not too difficult and in a few tries, an attacker could obtain configuration or password files. What you must do — always — is sanitize the input. Anything is better than blindly accept requests. If you need to restrict access to a file, you should generate encrypted, one-time IDs, so you can be sure a generated path can be used only once.
Use headers correctly This is a very widespread problem and unfortunately even the PHP manual is plagued with errors. There is no such thing in HTTP. Change language: Edit Report a Bug. Parameters header The header string.
Return Values No value is returned. Changelog Version Description 5. Example 2 Caching directives PHP scripts often generate dynamic content that must not be cached by the client browser or any proxy caches between the server and the client browser.
Many proxies and clients can be forced to disable caching with: Notes Note: Most of the pages were displayed correct, but on some of them apache added weird content to it: A 4-digits HexCode on top of the page before any output of my php script , seems to be some kind of checksum, because it changes from page to page and browser to browser.
Several times this one is asked on the net but an answer could not be found in the docs on php.
If you want to redirect an user and tell him he will be redirected, e. If not, click here. So, either you have to use the HTML meta refresh thingy or you use the following: Browsers typically re-request a page every time, cache a page for the session, and cache a page for longer, or even indefinitely. If the status code is not specified, header 'Location: It seems the note saying the URI must be absolute is obsolete.
Found on https: When using PHP to output an image, it won't be cached by the client so if you don't want them to download the image each time they reload the page, you will need to emulate part of the HTTP protocol.
2. Use headers correctly
Here's how: If using the 'header' function for the downloading of files, especially if you're passing the filename as a variable, remember to surround the filename with double quotes, otherwise you'll have problems in Firefox as soon as there's a space in the filename.
So instead of typing: Sorry, the site won't let me post such a long link Thanks Rasmus Lerdorf and his team to wrap off parts of unusual php functionality ,php 7 roolez!!!!! It is important to note that headers are actually sent when the first byte is output to the browser. In the case of redirects, if you forget to terminate your script after sending the header, adding a buffer or sending a character may change which page your users are sent to.
How to Use PHP to Force a File Download
This redirects to 2. You also won't see any "headers already sent" errors because the browser follows the redirect before it can display the error.
This is because headers aren't sent until the output buffer is flushed. Also, be aware that IE versions 5, 6, 7, and 8 double-compress already-compressed files and do not reverse the process correctly, so ZIP files and similar are corrupted on download.
The following example disables compression in all versions of IE: BrowserMatch ". To remedy this you need to call: It will tell the PHP session code to not do any cache header changes of its own.
According to the RFC https: You can use HTTP's etags and last modified dates to ensure that you're not sending the browser data it already has cached.
After lots of research and testing, I'd like to share my findings about my problems with Internet Explorer and file downloads.
The Content-Length header is required by some browsers to activate download box. I use it here to make sure the box opens.The download method accepts a file name as the second argument to the method, which will determine the file name that is seen by the user downloading the file.
This may have rare consequences as mentioned in bug Get answers and train to solve all your tech problems - anytime, anywhere. It's a way of identifying files on the Internet according to their nature and format. If the same file is requested more than once, then you've already saved bandwidth by not downloading that file again, and you're also serving it to the visitor much faster it's far faster to read a file from a hard drive than to download it again each time it's requested.