(PHP 4, PHP 5, PHP 7, PHP 8)
filetype — Restituisce il tipo di file
Restituisce il tipo del file. Sono valori possibili fifo, char, dir, block, link, file e unknown.
Restituisce false se si verifica un errore. Inoltre la funzione
filetype() genera un errore di livello E_NOTICE
se fallisce la chiamata a stat o se il tipo è sconosciuto.
Nota: I risultati di questa funzione saranno memorizzati. Vedere clearstatcache() per maggiori dettagli.
A partire da PHP 5.0.0, questa funzione può essere utilizzata con
alcuni URL wrappers. Fare riferimento a
Supported Protocols and Wrappers per la lista di quali wrappers supportano le funzioni della famiglia
stat().
Example #1 Esempio di uso di filetype()
<?php
echo filetype('/etc/passwd'); // file
echo filetype('/etc/'); // dir
?>Vedere anche: is_dir(), is_file(), is_link(), file_exists(), stat() e mime_content_type().
There are 7 values that can be returned. Here is a list of them and what each one means
block: block special device
char: character special device
dir: directory
fifo: FIFO (named pipe)
file: regular file
link: symbolic link
unknown: unknown file typefiletype() does not work for files >=2GB on x86 Linux. You can use stat as a workarround:
$type=trim(`stat -c%F $file`);
Note that stat returns diffenerent strings ("regular file","directory",...)I use the CLI version of PHP on Windows Vista. Here's how to determine if a file is marked "hidden" by NTFS:
<?php
function is_hidden_file($fn) {
$attr = trim(exec('FOR %A IN ("'.$fn.'") DO @ECHO %~aA'));
if($attr[3] === 'h')
return true;
return false;
}
?>
Changing <?php if($attr[3] === 'h') ?> to <?php if($attr[4] === 's') ?> will check for system files.
This should work on any Windows OS that provides DOS shell commands.Putting @ in front of the filetype() function does not prevent it from raising a warning (Lstat failed), if E_WARNING is enabled on your error_reporting.
The most common cause of filetype() raising this warning and not showing a filetype() in the output (it actually returns NULL) is, if you happened to pass just the 'Dir or File Name' and not the complete "Absolute or Relative Path" to that 'file or Dir'. It may still read that file and return its filetype as "file" but for Dir's it shows warning and outputs NULL.
eg:
$pathToFile = '/var/www';
$file = 'test.php';
$dir = 'somedir';
Output for filetype($file) will be returned as 'file' and possibly without any warning, but for filetype($dir), it will return NULL with the warning "Lstat failed", unless you pass a complete path to that dir, i.e. filetype($pathToFile.'/'.$dir).
This happened to me and found this solution after a lot of trial and error. Thought, it might help someone.