Authors

Header content type pdf

However, flaky browser header content type pdf makes its usage a walk in the mine field. However, usually you want to save another file, the file a hyperlink leads to. The filename should not have any directory path information specified.

The filename should be enclosed in double quotes but most browsers will support file names without double quotes. The feature had many security vulnerabilities and as a result Microsoft changed the code many times sometimes breaking it altogether. Practice has shown that download code uses a different HTTP header parser. And if that parser is unsuccessfull at handling all header lines, IE will fail to download file at all. 01 there are problems in 6. 5 will try to show the file in browser window instead of downloading. This problem was fixed in 5.

5 Service Pack 1, but another one was introduced instead – it may save the referring document instead of the downloaded file. If the filename extension is not known, it will add it to the filename twice when saving the file. The bug was currected in 5. Miscrosoft started supporting Content-Disposition:attachment header with Internet Explorer 5. Opera also have had security problems related to the header, but as in the case with Firefox it works. Older versions had issues with filenames having special characters like space or comma.

Your web browser may be malfunctioning. Your internet connection may be unreliable. For more information about the W3C website, see the Webmaster FAQ. Your web browser may be malfunctioning. Your internet connection may be unreliable.

For more information about the W3C website, see the Webmaster FAQ. 1 specification for more information on HTTP headers. HTML tags, blank lines in a file, or from PHP. There are two special-case header calls. The second special case is the “Location:” header. 201 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. Forces the HTTP response code to the specified value. Note that this parameter only has an effect if the header is not empty. This function now prevents more than one header to be sent at once as a protection against header injection attacks.

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. 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. HTTP headers have already been sent. 01 that prevents this from working. There is also a bug in Microsoft Internet Explorer 5. 5 that interferes with this, which can be resolved by upgrading to Service Pack 2 or later.

It must by passed manually using SID constant. It took me quite a while to find out about the wrong protocol in the HTTP-header. 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. You will be redirected in about 5 secs.

Browsers typically re-request a 307 page every time, cache a 302 page for the session, and cache a 301 page for longer, or even indefinitely. 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. Getting headers sent by the client. Checking if the client is validating his cache and if it is current.



Previous Article