Bug #16830 Updated: file_exists("") returns TRUE instead of FALSE
| From: | sander@php.net | Date: | Fri, 26 Apr 2002 15:59:39 +0000 |
| Subject: | Bug #16830 Updated: file_exists("") returns TRUE instead of FALSE | ||
| References: | 1 | Groups: | php.bugs |
| Request: | Send a blank email to php-bugs+get-6139@lists.php.net to get a copy of this message | ||
ID: 16830
Updated by: sander@php.net
Reported By: soeren.fleischer@gmx.net
-Status: Open
+Status: Closed
Bug Type: Filesystem function related
Operating System: Windows 2000 SP2
PHP Version: 4.2.0
New Comment:
Plese, SEARCH the bugdb. There is a report about this. (sorry Jani ;)
Previous Comments:
------------------------------------------------------------------------
[2002-04-25 16:39:58] soeren.fleischer@gmx.net
file_exists("") returns TRUE instead of FALSE
As per request, here are more details...
This:
<?
$filename="";
if (is_file($filename))
{
print "is_file sais, the file $filename <b>does exist</b>.<br>";
}
else
{
print "is_file sais, the file $filename <b>did not exist</b>.<br>";
}
if (file_exists($filename))
{
print "file_exists sais, the file $filename <b>does exist</b>.<br>";
}
else
{
print "file_exists sais, the file $filename <b>did not
exist</b>.<br>";
}
?>
will return:
is_file sais, the file did not exist.
file_exists sais, the file does exist.
Again, in other words:
If you give file_exists() an empty string as argument ( file_exists("")
), it will return TRUE (saying the file existed, but it does not,
because "" is no file.)
is_file() correctly returns FALSE if you give it an empty string as
argument and so should file_exists do, as it did in PHP 4.1.2
Further information:
I used to check my upload-scripts for uploaded files using
$file=$_FILES['datei']['tmp_name'];
if (file_exists($file)) { savefile($file); }
but I cannot use this anymore because when a user does not upload a
file, $filename becomes an empty string and file_exists returns TRUE,
so my function savefile($file) wants to save a non-uploaded file.
------------------------------------------------------------------------
[2002-04-25 16:14:54] tal@php.net
Not enough information was provided for us to be able
to handle this bug. Please re-read the instructions at
http://bugs.php.net/how-to-report.php
If you can provide more information, feel free to add it
to this bug and change the status back to "Open".
------------------------------------------------------------------------
[2002-04-25 15:57:50] soeren.fleischer@gmx.net
file_exists("") returns TRUE instead of FALSE.
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=16830&edit=1