Edit report at https://bugs.php.net/bug.php?id=55691&edit=1
ID: 55691
Comment by: thomas at partyflock dot nl
Reported by: di_herbert dot huber at yahoo dot com
Summary: different results from finfo_file and finfo_buffer
Status: Open
Type: Bug
Package: Unknown/Other Function
Operating System: WinXP HE SP2
PHP Version: 5.3.8
Block user comment: N
Private report: N
New Comment:
Happens to me too, and I experience this for an xls/Excel document too.
Previous Comments:
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[2011-09-14 09:35:36] di_herbert dot huber at yahoo dot com
Description:
------------
different results from finfo_file and finfo_buffer
Scenario:
1. MS Excel-File stored in mySQL database LONGBLOB-Column
2. This binary data selected from database
3. This binary data stored to tempfile
4. mime-type sniffing done by finfo_buffer on binary data
> result: application/octet-stream
5. mime-type sniffing done by finfo_file on tempfile
> result: application/vnd.ms-excel
PROBLEM:
different result, dependent on used Fileinfo Function
Comment: The tempfile has NO extension like ".xls" that could be used as
hint for mimetype-sniffing
Test script:
---------------
<?PHP
...
$tempFileName = tempnam(sys_get_temp_dir(), "tempfile");
$tempFileHandle = fopen($tempFileName, "w");
fwrite($tempFileHandle, $attrib);
fclose($tempFileHandle);
// ensure that "extension=php_fileinfo.dll" is enabled in php.ini
$finfo = finfo_open(FILEINFO_MIME_TYPE); // return mime type ala
mimetype extension
$fileContentsTypeBuf = finfo_buffer($finfo, $attrib,
FILEINFO_MIME_TYPE);
$fileContentsType = finfo_file($finfo, $tempFileName);
finfo_close($finfo);
...
Expected result:
----------------
same result
"application/vnd.ms-excel" from finfo_buffer
"application/vnd.ms-excel" from finfo_file
Actual result:
--------------
different results
"application/octet-stream" from finfo_buffer
"application/vnd.ms-excel" from finfo_file
------------------------------------------------------------------------
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Edit this bug report at https://bugs.php.net/bug.php?id=55691&edit=1
