Comments on: PHP, Mime Types and Fileinfo http://www.jellyandcustard.com/2006/01/19/php-mime-types-and-fileinfo/ Web Development Blog Sat, 05 Jul 2008 00:13:58 +0000 http://wordpress.org/?v=2.0.2 by: How To Force File Download With PHP | W-Shadow.com http://www.jellyandcustard.com/2006/01/19/php-mime-types-and-fileinfo/#comment-15306 Sun, 12 Aug 2007 15:16:46 +0000 http://www.jellyandcustard.com/2006/01/19/php-mime-types-and-fileinfo/#comment-15306 [...] Related info Determining MIME type of a file automatically More on determining the MIME type Common MIME types HTTP, caching and other stuff Share and Enjoy: These icons link to social bookmarking sites where readers can share and discover new web pages. [...] […] Related info Determining MIME type of a file automatically More on determining the MIME type Common MIME types HTTP, caching and other stuff Share and Enjoy: These icons link to social bookmarking sites where readers can share and discover new web pages. […]

]]> by: Malversán http://www.jellyandcustard.com/2006/01/19/php-mime-types-and-fileinfo/#comment-2308 Fri, 16 Feb 2007 12:47:00 +0000 http://www.jellyandcustard.com/2006/01/19/php-mime-types-and-fileinfo/#comment-2308 <blockquote>$mime_type = $fi-&#62;buffer(file_get_contents($file));</blockquote> It's a total waste of memory to load file contents into a variable if you're dealing with big files. There's an easier solution with the finfo class, although you won't find it in the (always outdated) PHP documentation. <blockquote>$mime_type = $fi-&#62;file($file);</blockquote> In fact it was you who helped me to figure that there was a '-&#62;file()' method. I was searching for an example of FileInfo usage and the only one I found was this page. Regards.

$mime_type = $fi->buffer(file_get_contents($file));

It's a total waste of memory to load file contents into a variable if you're dealing with big files.

There's an easier solution with the finfo class, although you won't find it in the (always outdated) PHP documentation.

$mime_type = $fi->file($file);

In fact it was you who helped me to figure that there was a '->file()' method. I was searching for an example of FileInfo usage and the only one I found was this page.

Regards.

]]> by: bart bosma http://www.jellyandcustard.com/2006/01/19/php-mime-types-and-fileinfo/#comment-1748 Tue, 23 Jan 2007 13:03:42 +0000 http://www.jellyandcustard.com/2006/01/19/php-mime-types-and-fileinfo/#comment-1748 I think Jason's shell solution doesn't works in windows, and it's way too much code just to get a 'stupid' mime type :). i think the mime_content_type followed by the fileinfo fc. are the best choices.. I think Jason's shell solution doesn't works in windows, and it's way too much code just to get a 'stupid' mime type :) .

i think the mime_content_type followed by the fileinfo fc. are the best choices..

]]> by: Jason http://www.jellyandcustard.com/2006/01/19/php-mime-types-and-fileinfo/#comment-1033 Wed, 01 Nov 2006 23:17:22 +0000 http://www.jellyandcustard.com/2006/01/19/php-mime-types-and-fileinfo/#comment-1033 If you have shell_exec ability, you can also use the following method. I've found it to be as accurate and just as simple. <code> //format file path in case it contains strange chars or spaces $fileCommandPath = escapeshellarg('/abs/path/to/file.ext'); //get response from shell "file" command. note use of backtick operator $fileCommandResult = trim(`file -bi $fileCommandPath`); //sometimes "file -bi" returns extra data with mime type. only use string before ";" $fileCommandResult = explode(';', $fileCommandResult); //pretty sure the real mime type of the file is... $mime_type = $fileCommandResult[0]; </code> If you have shell_exec ability, you can also use the following method. I've found it to be as accurate and just as simple.

//format file path in case it contains strange chars or spaces
$fileCommandPath = escapeshellarg('/abs/path/to/file.ext');

//get response from shell "file" command. note use of backtick operator
$fileCommandResult = trim(`file -bi $fileCommandPath`);

//sometimes "file -bi" returns extra data with mime type. only use string before ";"
$fileCommandResult = explode(';', $fileCommandResult);

//pretty sure the real mime type of the file is...
$mime_type = $fileCommandResult[0];

]]> by: Using DirectoryIterator to List Files in PHP · Jelly & Custard http://www.jellyandcustard.com/2006/01/19/php-mime-types-and-fileinfo/#comment-231 Thu, 18 May 2006 17:07:18 +0000 http://www.jellyandcustard.com/2006/01/19/php-mime-types-and-fileinfo/#comment-231 [...] getType() - get file type (not MIME Type) [...] […] getType() - get file type (not MIME Type) […]

]]> by: Sergio Álvarez (xergio) http://www.jellyandcustard.com/2006/01/19/php-mime-types-and-fileinfo/#comment-25 Mon, 06 Feb 2006 02:06:40 +0000 http://www.jellyandcustard.com/2006/01/19/php-mime-types-and-fileinfo/#comment-25 <strong>Gentoo, PHP5 y mime_content_type()</strong> Esto es para recordarlo cuando en un futuro me vuelva a pasar.Quer&#237;a usar la funci&#243;n mime_content_type() en PHP5, la cual me da el MIME Type de un archivo (vamos, el tipo de archivo que es seg&#250;n el contenido). Pero resulta que en G... Gentoo, PHP5 y mime_content_type()Esto es para recordarlo cuando en un futuro me vuelva a pasar.Quería usar la función mime_content_type() en PHP5, la cual me da el MIME Type de un archivo (vamos, el tipo de archivo que es según el contenido). Pero resulta que en G…

]]> by: Ben http://www.jellyandcustard.com/2006/01/19/php-mime-types-and-fileinfo/#comment-21 Thu, 19 Jan 2006 15:06:14 +0000 http://www.jellyandcustard.com/2006/01/19/php-mime-types-and-fileinfo/#comment-21 Very useful post! You can also use <a href="http://uk2.php.net/mime-content-type" rel="nofollow">mime_content_type()</a> for determining Mime types. Its absolutely imperative that your scripts check the mime type of uploaded files, since the $_FILES array's contents is determined by the browser NOT the server. If the user is on MSIE the mime-type is simply picked out by the file extension not the file's headers, leaving a nice big hole for exploitation. Very useful post!

You can also use mime_content_type() for determining Mime types.

Its absolutely imperative that your scripts check the mime type of uploaded files, since the $_FILES array's contents is determined by the browser NOT the server. If the user is on MSIE the mime-type is simply picked out by the file extension not the file's headers, leaving a nice big hole for exploitation.

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