note 91008 added to function.file-exists
| From: | jbeltran at osu1 dot php dot net | Date: | Wed, 20 May 2009 20:39:48 +0000 |
| Subject: | note 91008 added to function.file-exists | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-155807@lists.php.net to get a copy of this message | ||
I want to warn developers using PHP 5.0.4 of a bug that don't happen in current stable
versions:
file_exists seems to cache the response, even when the file has been moved.
An example:
<?php
/*
When a file which has been called by file_exist
has been moved, the file_exist next call gives true again
*/
$f = "foo.txt";
file_put_contents( $f, "content" );
if(file_exists( $f )){
rename( $f, $f.".moved" );
}
if( file_exists( $f )){
echo "Wrong! the file has just been moved! file_exists should return false.";
rename( $f, $f.".willnotwork" ); //It gives a warning
}
?>
The same code tested in PHP 5.2.4-2ubuntu5.6 with Suhosin-Patch 0.9.6.2 (cli) behaves correctly.
----
Server IP: 80.64.47.13
Probable Submitter: 80.174.184.72
----
Manual Page -- http://www.php.net/manual/en/function.file-exists.php
Edit -- https://master.php.net/note/edit/91008
Del: integrated -- https://master.php.net/note/delete/91008/integrated
Del: useless -- https://master.php.net/note/delete/91008/useless
Del: bad code -- https://master.php.net/note/delete/91008/bad+code
Del: spam -- https://master.php.net/note/delete/91008/spam
Del: non-english -- https://master.php.net/note/delete/91008/non-english
Del: in docs -- https://master.php.net/note/delete/91008/in+docs
Del: other reasons-- https://master.php.net/note/delete/91008
Reject -- https://master.php.net/note/reject/91008
Search -- https://master.php.net/manage/user-notes.php