On Mon, 8 Mar 2010, Ashley Sheridan wrote: > On Mon, 2010-03-08 at 10:57 -0500, Robert P. J. Day wrote: > > > hi, i'm interested in the most comprehensive way to determine the > > content type of a stream of bytes that's been uploaded to a PHP > > script? assuming that the bytes are uploaded simply via a POST > > parameter, i can see that there are a couple ways to do it: > > > > * getimagesize() > > * FileInfo > > > > i've been doing some testing this morning and a few video formats > > handed to FileInfo come back as "application/octet-stream" which > > isn't particularly informative. and i want to support as many > > different formats of image, audio and video as possible. > > > > so ... what's the best way? oh, by the way, when i used > > fileinfo, i didn't bother handing over a magic file. i'm starting > > to think that would make a difference. and is there a noticeable > > advantage to upgrading to PHP 5.3 since the server (centos 5.4) is > > currently running only PHP 5.1.6. thanks.
> If you're wanting to grab details about a clip, what about using > mplayer for dealing with video clips. It has more than a few command > line options that can return various levels of detail about a media > file. You could use the extension of the clip as a hint about what > way you can determine a files exact type. So, if a file came in with > a jpg, png or gif extension, you could use GD functions to determine > if it's really an image. If it's a .avi, .mpg, .mp4, .mp3, .ogg, you > could use mplayer to deal with it. in order to make life as difficult as possible, all i can assume is an incoming stream of bytes. i will have no idea where it came from, or its original file name. all of the mime/type identification has to be done by the PHP script on the server end, based solely on the content. (i'm fairly sure that means a "magic" file will have to be involved.) > This does seem to ba a bit of an area where PHP is lacking. Even the > manual pages are cryptic. It seems to suggest that the Mime > functions which we should use in-place of deprecated ones themselves > rely on those same deprecated functions! i have noticed that. the "mime_content_type()" function looked like a good candidate but it's marked as deprecated. the best option appears to be the Fileinfo stuff. rday -- ======================================================================== Robert P. J. Day Waterloo, Ontario, CANADA Linux Consulting, Training and Kernel Pedantry. Web page: http://crashcourse.ca Twitter: http://twitter.com/rpjday ======================================================================== -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php