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Bug #21410 file_exists(), filetype() do not return FALSE for bad filenames: "" or NULL
Submitted: 2003-01-04 13:29 UTC Modified: 2003-02-27 10:42 UTC
Avg. Score:4.5 ± 0.5
Reproduced:2 of 2 (100.0%)
Same Version:2 (100.0%)
Same OS:2 (100.0%)
From: ari at alienhosting dot com Assigned:
Status: Closed Package: Filesystem function related
PHP Version: 4.3.2-dev OS: win32 only
Private report: No CVE-ID:
 [2003-01-04 13:29 UTC] ari at alienhosting dot com
In the filetype() doc, it says the function returns FALSE on error, but says nothing about a warning being output if it fails. In 4.3.0, A warning is printed:

Warning: filetype() [function.filetype]: Lstat failed for (null) (errno=2 - No such file or directory) in /home/alienhosting/public_html/webmail/plugins/administrator/options.php on line 431


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 [2003-01-04 14:37 UTC]
Changing this bug to a documentation problem.

The warning are now expected for 2 cases: when stat or lstat have failed and when the file type is unknown.

I'm working on fixing the documentation.
 [2003-01-04 14:43 UTC]
The documentation now warns about the warnings :-)

Thank you for your report.
 [2003-01-04 15:12 UTC]
I experience this E_WARNING in linux but in Windows I always get the following with 4.3.0/win2000:

var_dump( filetype(null) ); // string(3) "dir"

Which seems odd.  Basically instead of the E_WARNING error it shows the bogus file as a dir.  This happens with CGI, CLI, and Apache2.

Marking this as a filesystem bug.
 [2003-01-04 15:30 UTC]
To be clearer:  This happens with any bogus information, whether it be a string, NULL, or otherwise.

Of course passing no arguments still results in the standard wrong parameter count error.
 [2003-02-19 23:59 UTC]
Tested with latest CVS snapshot..

 [2003-02-20 00:09 UTC]
Cause of this is that in win32, php_stat() never
tests whether the file exists or not.

 [2003-02-25 02:56 UTC]
Same basic problem with file_exists() too..

 [2003-02-25 02:59 UTC]
Just to clarify:

The base function that is used should check that the 
passed parameter is a) valid b) if valid, the file exists

 [2003-02-27 10:42 UTC]
This bug has been fixed in CVS.

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In case this was a documentation problem, the fix will show up soon at

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