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filectime

(PHP 4, PHP 5, PHP 7, PHP 8)

filectimePrende l'ora in cui l'inode del file è stato modificato

Descrizione

filectime(string $filename): int

Restituisce l'ora in cui il file è stato cambiato l'ultima volta o false in caso d'errore. L'ora viene restituita come un timestamp di Unix.

Nota: In molti filesystem Unix, si considera un file modificato, quando il suo inode viene cambiato; cioè quando i permessi, il proprietario, il gruppo o altri metadata dell'inode vengono aggiornati. Vedere anche filemtime() (che è ciò che ti serve se vuoi inserire la scritta "Ultima modifica: " nel piede delle tue pagine web) e fileatime().

Sappi anche che in alcuni testi su Unix si fa riferimento al ctime di un file come l'ora di creazione dello stesso. E' sbagliato. Nella maggioranza dei filesystem Unix non esiste un oa di creazione.

Nota: I risultati di questa funzione saranno memorizzati. Vedere clearstatcache() per maggiori dettagli.

Suggerimento

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 fileatime()

<?php

// Visualizza ad esempio: somefile.txt è stato modificato: December 29 2002 22:16:23.

$filename = 'somefile.txt';
if (
file_exists($filename)) {
echo
"$filename è stato modificato: " . date("F d Y H:i:s.", filectime($filename));
}

?>

Vedere anche filemtime().

add a note

User Contributed Notes 9 notes

up
14
StevieMc at example dot com
17 years ago
This method gets all the files in a directory, and echoes them in the order of the date they were added (by ftp or whatever).

<?PHP
function dirList ($directory, $sortOrder){

//Get each file and add its details to two arrays
$results = array();
$handler = opendir($directory);
while (
$file = readdir($handler)) {
if (
$file != '.' && $file != '..' && $file != "robots.txt" && $file != ".htaccess"){
$currentModified = filectime($directory."/".$file);
$file_names[] = $file;
$file_dates[] = $currentModified;
}
}
closedir($handler);

//Sort the date array by preferred order
if ($sortOrder == "newestFirst"){
arsort($file_dates);
}else{
asort($file_dates);
}

//Match file_names array to file_dates array
$file_names_Array = array_keys($file_dates);
foreach (
$file_names_Array as $idx => $name) $name=$file_names[$name];
$file_dates = array_merge($file_dates);

$i = 0;

//Loop through dates array and then echo the list
foreach ($file_dates as $file_dates){
$date = $file_dates;
$j = $file_names_Array[$i];
$file = $file_names[$j];
$i++;

echo
"File name: $file - Date Added: $date. <br/>"";
}

}
?>

I hope this is useful to somebody.
up
3
faketruth at yandex dot ru
8 years ago
If you need file creation time on Mac OS X:

<?php
if ($handle = popen('stat -f %B ' . escapeshellarg($filename), 'r')) {
$btime = trim(fread($handle, 100));
echo
strftime("btime: %Y.%m.%d %H:%M:%S\n", $btime);
pclose($handle);
}
?>
up
2
m dot rabe at directbox dot com
14 years ago
Under Windows you can use fileatime() instead of filectime().
up
2
javi at live dot com
15 years ago
Filemtime seems to return the date of the EARLIEST modified file inside a folder, so this is a recursive function to return the date of the LAST (most recently) modified file inside a folder.

<?php

// Only take into account those files whose extensions you want to show.
$allowedExtensions = array(
'zip',
'rar',
'pdf',
'txt'
);

function
filemtime_r($path)
{
global
$allowedExtensions;

if (!
file_exists($path))
return
0;

$extension = end(explode(".", $path));
if (
is_file($path) && in_array($extension, $allowedExtensions))
return
filemtime($path);
$ret = 0;

foreach (
glob($path."/*") as $fn)
{
if (
filemtime_r($fn) > $ret)
$ret = filemtime_r($fn);
// This will return a timestamp, you will have to use date().
}
return
$ret;
}

?>
up
2
coolkoon at gmail dot com
13 years ago
You should avoid feeding the function files without a path. This applies for filemtime() and possibly fileatime() as well. If you omit the path the command will fail with the warning "filectime(): stat failed for filename.php".
up
1
website at us dot kaspersky dot com
16 years ago
Line 37 of the code above has an error.

echo "File name: $file - Date Added: $date. <br/>"";

There is an extra " after the <br/> that needs to be deleted in order for this code to work.
up
1
chuck dot reeves at gmail dot com
16 years ago
filectime running on windows reading a file from a samba share, will still show the last modified date.
up
0
soapergem at gmail dot com
14 years ago
Note that on Windows systems, filectime will show the file creation time, as there is no such thing as "change time" in Windows.
up
-1
laurent dot pireyn at wanadoo dot be
22 years ago
If you use filectime with a symbolic link, you will get the change time of the file actually linked to. To get informations about the link self, use lstat.
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