Php header download pdf

Already have an account? Sign in to comment. You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. Service not avaliable:. Javascript header:.

Content-Disposition: inline implies the file should be displayed, not downloaded. Use attachment instead. In addition, make the file extension in upper case to make it compatible with some mobile devices. Update : Pretty sure only Blackberries had this problem, but the world moved on from those so this may be no longer a concern. Content-Length is optional but is also important if you want the user to be able to keep track of the download progress and detect if the download was interrupted.

But when using it you have to make sure you won't be send anything along with the file data. I found this answer here. How are we doing?

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Active 7 months ago. Viewed k times. I'm really struggling to get my application to open a pdf when the user clicks on a link. Improve this question. 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:' defaults to 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.

It seems the note saying the URI must be absolute is obsolete. The header call can be misleading to novice php users.

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.

Sorry, the site won't let me post such a long link Since PHP 5. 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 ". PageRank may be transferred. The new URI is not a substitute reference for the originally requested resource and is not cached.

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. 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.

Just to inform you all, do not get confused between Content-Transfer-Encoding and Content-Encoding Content-Transfer-Encoding specifies the encoding used to transfer the data within the HTTP protocol, like raw binary or base Eg Use:- header 'Content-Encoding: gzip' ;.

You can use HTTP's etags and last modified dates to ensure that you're not sending the browser data it already has cached. Thanks Rasmus Lerdorf and his team to wrap off parts of unusual php functionality ,php 7 roolez!!!!! I made a script that generates an optimized image for use on web pages using a script to resize and reduce original images, but on some servers it was generating the image but then not using it due to some kind of cache somewhere of the status.

It will tell the PHP session code to not do any cache header changes of its own. The second special case is the "Location:" header. Not only does it send this header back to the browser, but it also returns a REDIRECT status code to the browser unless the or a 3xx status code has already been set. The optional replace parameter indicates whether the header should replace a previous similar header, or add a second header of the same type.

By default it will replace, but if you pass in false as the second argument you can force multiple headers of the same type.

For example:. Forces the HTTP response code to the specified value. Note that this parameter only has an effect if the header is not empty. Example 1 Download dialog.

If you want the user to be prompted to save the data you are sending, such as a generated PDF file, you can use the » Content-Disposition header to supply a recommended filename and force the browser to display the save dialog.

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:. Note : You may find that your pages aren't cached even if you don't output all of the headers above.

There are a number of options that users may be able to set for their browser that change its default caching behavior. By sending the headers above, you should override any settings that may otherwise cause the output of your script to be cached. Note : You can use output buffering to get around this problem, with the overhead of all of your output to the browser being buffered in the server until you send it.

Note : The HTTP status header line will always be the first sent to the client, regardless of the actual header call being the first or not. The status may be overridden by calling header with a new status line at any time unless the HTTP headers have already been sent. Note : Most contemporary clients accept relative URI s as argument to » Location: , but some older clients require an absolute URI including the scheme, hostname and absolute path.

Note : Session ID is not passed with Location header even if session. It must by passed manually using SID constant. Submit a Pull Request Report a Bug. Parameters header The header string. Return Values No value is returned.