Bug #79325 [Com]: MIME type of MP3s over 50MB is incorrect

Edit report at https://bugs.php.net/bug.php?id=79325&edit=1 ID: 79325 Comment by: daverandom@php.net Reported by: michael at beorn dot me Summary: MIME type of MP3s over 50MB is incorrect Status: Feedback Type: Bug Package: Filesystem function related Operating System: macOS, Ubuntu PHP Version: 7.4.3 Block user comment: N Private report: N New Comment: Side note to anyone who happens to be passing with admin access to bugsnet, the fileinfo extension seems to be missing from the package list (or possibly I am just blind) Previous Comments: ------------------------------------------------------------------------ [2020-02-29 20:02:44] daverandom@php.net I cannot reproduce this on any version or platform including 7.4.3 ubuntu as specified above, I don't have OSX available to test. As a rule the total size of the file should have no impact here as these functions do not generally do anything other than looking at a small number of bytes from the start of the file - are you certain that the >50MB file(s) you have tested are correctly encoded? Can you verify whether anything else that wraps libmagic is able to correctly identify them? I'm wondering if this is an upstream problem, or possibly a broken magic.mime definition file. If you are able to provide a sample MP3 file that causes the problem I will investigate further, though I realise this may not be possible. ------------------------------------------------------------------------ [2020-02-29 18:48:45] michael at beorn dot me Description: ------------ --- From manual page: https://php.net/function.mime-content-type --- An MP3 file over 50,000,000 bytes (50 MB base-10) is reported to have a MIME type of “application/octet-stream” instead of the correct “audio/mpeg”: Test script: --------------- echo mime_content_type('test-over-50mb.mp3') . " > " . filesize('test-over-50mb.mp3'); application/octet-stream > 50030096 echo mime_content_type(‘test-under-50mb.mp3') . " > " . filesize(‘test-under-50mb.mp3'); audio/mpeg > 49730577 Expected result: ---------------- The expected result is that an MP3 audio file over 50MB is reported as having a MIME type of "audio/mpeg". Actual result: -------------- An MP3 file over 50,000,000 bytes (50 MB base-10) is reported to have a MIME type of “application/octet-stream”. ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=79325&edit=1