is_file
To find out whether a file is hardlinked to another filename, check the number of links of the stat() output. If it is >1 there is another filename for that file.
To find out whether two filenames are pointing to the same file, check the inode number of those 2 filenames. If it is equal, the 2 filenames are hardlinked together.
is_link
(PHP 4, PHP 5)
is_link — Indica si el archivo es un enlace simbólico
Descripción
bool is_link
( string $nombre_archivo
)
Indica si el archivo dado es un enlace simbólico.
Lista de parámetros
- nombre_archivo
-
Ruta al archivo.
Valores retornados
Devuelve TRUE si el archivo con el nombre dado existe y es un enlace simbólico, FALSE de lo contrario.
Notes
Note: Los resultados de esta función son guardados. Consultar clearstatcache() para más detalles.
Tip
A partir de PHP 5.0.0, esta funcion tambien puede usarse con algunas URL como nombre de fichero. Consultar Lista de Protocolos/Envolturas Soportadas, para obtener una lista con soporte para la funcionalidad stat().
add a note
User Contributed Notesis_link
mbirth at webwriters dot de
20-May-2008 12:24
20-May-2008 12:24
neverpanic->gmail[com]
30-Dec-2006 07:50
30-Dec-2006 07:50
For me (Debian Sarge VPS) is_link returns true even for directories if you don't add a trailing slash to the filename.
<?php
if ($dir{strlen($dir)-1} == '/') $dir = substr($dir, 0, -1);
is_link($dir);
?>
This works for me. It can't detect a symlink somewhere in a complete path, though (i.e. is_link(/www/somedir/file.php) will return false, just as is_link(/www/) would)
brendy at gmail dot com
05-May-2006 11:22
05-May-2006 11:22
On Mac OSX, to see if a file is a FInder alias:
<?PHP
if( getFinderAlias( $someFile , $target ) ) {
echo $target;
}
else {
echo "File is not an alias";
}
function getFinderAlias( $filename , &$target ) {
$getAliasTarget = <<< HEREDOC
-- BEGIN APPLESCRIPT --
set checkFileStr to "{$filename}"
set checkFile to checkFileStr as POSIX file
try
tell application "Finder"
if original item of file checkFile exists then
set targetFile to (original item of file checkFile) as alias
set posTargetFile to POSIX path of targetFile as text
get posTargetFile
end if
end tell
end try
-- END APPLESCRIPT --
HEREDOC;
$runText = "osascript << EOS\n{$getAliasTarget}\nEOS\n";
$target = trim( shell_exec( $runText ) );
return ( $target == "" ? false : true );
}
?>
jr at cnb dot uam dot es
31-May-2005 03:31
31-May-2005 03:31
Why don't you just try
is_dir("$pathname/.")
instead?
If $pathname is a directory, $pathname/. is itself and is a directory too.
If $pathname is a link to a directory, then $pathname/. is the actual directory pointed at and is a directory as well.
If $pathname is a link to a non-directory, then $pathname/. does not exist and returns FALSE, as it should.
A lot easier, more readable and intuitive.
andudi at gmx dot ch
02-Jun-2002 02:44
02-Jun-2002 02:44
On my SuSE 7.2 is_link does not work on directories, but to find out, if a dir is a link, I use now this:
$linkdir = $path.$linkdirname;
if (realpath($linkdir) != realpath($path)."/".$linkdirname):
//$linkdir is a symbolic linked dir!
...
and this works fine :-)
Andreas Dick
aris at riponce dot com
27-Mar-2001 07:27
27-Mar-2001 07:27
If you test a symbolic (soft) link with is_file() it will return true. Either use filetype() which always returns the correct type OR make sure that you FIRST test with is_link() before you do with is_file() to get the correct type.