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Bug #77784 mime_content_type result gets doubled for xlsx
Submitted: 2019-03-23 10:29 UTC Modified: 2019-04-17 15:42 UTC
Avg. Score:5.0 ± 0.0
Reproduced:2 of 2 (100.0%)
Same Version:1 (50.0%)
Same OS:1 (50.0%)
From: dpoddubny at gmail dot com Assigned:
Status: Verified Package: Filesystem function related
PHP Version: 7.3.3 OS: linux
Private report: No CVE-ID: None
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 [2019-03-23 10:29 UTC] dpoddubny at gmail dot com
Hello. Starting from php 7.3.2 function mime_content_type doubles the result for xlsx files created in LibreOffice ( While php 7.3.1 works correctly.

Test script:
How to reproduce:
1. git clone

2. Build the image and see the bug:

docker build --no-cache --build-arg PHP_VER=7.3.2 .

Step 5/5 : RUN php -r "var_dump(mime_content_type('/test.xlsx'));"
 ---> Running in 71f6655ae0ed
string(130) "application/vnd.openxmlformats-officedocument.spreadsheetml.sheetapplication/vnd.openxmlformats-officedocument.spreadsheetml.sheet"

docker build --no-cache --build-arg PHP_VER=7.3.1 .

Step 5/5 : RUN php -r "var_dump(mime_content_type('/test.xlsx'));"
 ---> Running in 27e744a45920
string(65) "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"

Expected result:
mime_content_type('/test.xlsx') returns "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"

Actual result:
mime_content_type('/test.xlsx') returns "application/vnd.openxmlformats-officedocument.spreadsheetml.sheetapplication/vnd.openxmlformats-officedocument.spreadsheetml.sheet"


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 [2019-04-17 15:42 UTC]
-Status: Open +Status: Verified
 [2019-04-17 15:42 UTC]
I can reproduce this with the provided .xlsx, but not with
arbitrary LibreOffice .xlsx files.  The behavioral change is most
likely caused by the upgrade to 5.34[1].

[1] <;a=commit;h=d874d4a15c2e17a753d580691906c95e9153b823>
 [2019-04-23 08:51 UTC] hrvoje dot novosel at gmail dot com
Just to add another note, I've hit this issue today with php 7.3.4
I've also tried resaving the xlsx with LibreOffice (x64) and after that I get application/octet-stream as function return.
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Last updated: Wed Apr 24 06:01:27 2019 UTC