PHP :: Doc Bug #78885 :: hash_file now shows a notice for directories and returns false

hash_file now shows a notice for directories and returns false

Submitted:

2019-11-29 10:57 UTC

Modified:

2020-11-03 18:09 UTC

Votes:	1
Avg. Score:	4.0 ± 0.0
Reproduced:	1 of 1 (100.0%)
Same Version:	0 (0.0%)
Same OS:	1 (100.0%)

From:

php-bugs at xpaw dot me

Assigned:

Status:

Open

Package:

Filesystem function related

PHP Version:

7.4.0

OS:

Linux

Private report:

CVE-ID:

None

[2019-11-29 10:57 UTC] php-bugs at xpaw dot me

Description:
------------
See https://3v4l.org/58RgW

Until 7.4.0beta1, it returned string(32) "d41d8cd98f00b204e9800998ecf8427e" and since 7.4.0beta2 it displays a notice.

Notice: hash_file(): read of 8192 bytes failed with errno=21 Is a directory in /in/58RgW on line 3

On Windows there is no notice, and it only returns false. I'm only creating this issue as I don't see anything in upgrading notes, deprecated features or the changelog about it.



Test script:
---------------
<?php
var_dump( hash_file( 'md5', '/etc/' ) );

Patches

Pull Requests

History

[2019-11-29 12:34 UTC] cmb@php.net

-Package: hash +Package: Filesystem function related

[2019-11-29 12:34 UTC] cmb@php.net

This is not particularly related to hash_file(), but also affects
other filesystem functions, see <https://3v4l.org/5XQB3>.  IIRC,
that was a very deliberate change/fix.

[2019-11-29 14:05 UTC] cmb@php.net

-Assigned To: +Assigned To: nikic

[2019-11-29 14:05 UTC] cmb@php.net

Well, the behavioral change has been introduced with commit
1cbcf0f[1]; not sure whether this particular behavior has been
anticipated.  If so, PR #4474[2] appears to be superfluous now.

[1] <http://git.php.net/?p=php-src.git;a=commit;h=1cbcf0f4f1e9a14b3fc76f6d3e53b567a9464fd4>
[2] <https://github.com/php/php-src/pull/4474>

[2019-12-04 09:57 UTC] nikic@php.net

This is intentional. PR #4474 is also still relevant, because it is a change specific to includes (not normal file reads).

UPGRADING currently only mentions this change for fread() and fwrite() in particular, but of course it also affects many, many other filesystem functions that read/write internally. I don't think we want to exhaustively list everything that might be affected.

[2020-11-03 18:09 UTC] cmb@php.net

-Status: Assigned +Status: Open -Type: Bug +Type: Documentation Problem -Assigned To: nikic +Assigned To:

[2020-11-03 18:09 UTC] cmb@php.net

Changing to doc problem for now (IIRC, there is at least one
duplicate of this ticket).

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