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Bug #31377 is_dir function
Submitted: 2005-01-02 00:18 UTC Modified: 2005-01-11 09:49 UTC
From: intro at intro dot one dot pl Assigned:
Status: Not a bug Package: Directory function related
PHP Version: 5CVS-2005-01-02 OS: linux
Private report: No CVE-ID: None
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 [2005-01-02 00:18 UTC] intro at intro dot one dot pl 
Description:
------------
For example i have 4 folders in /home directory on unix platform (a,b,c,d) and php5. The script:
I have strange thing that function is_dir not always shows every dirs as it is dir. In my example script is_dir returned only "c" as dir and the rest (a,b,d) as file.

Reproduce code:
---------------
<?php
$files=scandir("/home");
foreach ($files as $file)
{
	if (is_dir($file))
	{
		echo "dir: $file";
	}
}
?>

Expected result:
----------------
dir: a dir: b dir: c dir: d

Actual result:
--------------
dir: c

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 [2005-01-02 07:45 UTC] sniper@php.net 
Please try using this CVS snapshot:

  http://snaps.php.net/php5-STABLE-latest.tar.gz
 
For Windows:
 
  http://snaps.php.net/win32/php5.0-win32-latest.zip

Also, add 'var_dump($files);' after the scandir() line and check the output. (permissions..?)
 [2005-01-02 12:14 UTC] intro at intro dot one dot pl 
by "var_dump($files);" after scandir everything are listing good. Permissions etc. is ok and files and folders are readable. I checked some others dirs and sometimes files is showing as dir (for example .directory and others hidden files).
"Please try using this CVS snapshot:" still doesn't work correctly.
 [2005-01-02 19:00 UTC] intro at intro dot one dot pl 
Hmmmm i've done something else. Function filetype. And after use filetype on some folder i have many warnings that "Lstat failed for file". And the same way i think works "is_dir". Only a few files and folders are with no this warning and is showing as dir or file etc. The same is on other functions as is_file etc. My last code in tests:

<?php

$directorytoread = "/home"
$files=scandir($directorytoread);
$listdirindir = array();

// var_dump($files);
// all files are listing which is in folder /home

foreach ($files as $file)
{
  if ( filetype($file) == "dir" )
  echo "File \"$file\" is dir and ";
  if (is_dir($file))
  {
    array_push($listdirindir,$file);
    echo "dir \"$file\" added<br/>";
  }
}
print_r($listdirindir);

?>

...and my examples result is:

many of warnings +
File "." is dir and dir "." added
File ".." is dir and dir ".." added
+ many of warnings +
File "c" is dir and dir "c" added
+ many of warnings +
Array ( [0] => . [1] => .. [2] => c )
 [2005-01-10 21:34 UTC] tony2001@php.net 
Try is_dir($directorytoread.'/'.$file) first.
 [2005-01-10 22:12 UTC] intro at intro dot one dot pl 
"Try is_dir($directorytoread.'/'.$file) first."

... yes it is true, i could try it earlier :-). This works correctly, but with one thing: does "is_dir" function schould display a symbolic links (but only to some directory) as dir ?? Doesn't do it "is_link" function (where it shows symbolic links to directory too) ??
when function filetype works in any way correctly.

Regards
 [2005-01-11 09:49 UTC] tony2001@php.net 
>does "is_dir" function schould display a symbolic
>links (but only to some directory) as dir ??
is_dir() resolves symlinks.

No bug, just a user mistake -> bogus.
 
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