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filectime

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

filectimeGets inode change time of file

Опис

filectime(string $filename): int|false

Gets the inode change time of a file.

Параметри

filename

Path to the file.

Значення, що повертаються

Returns the time the file was last changed, або false в разі помилки. The time is returned as a Unix timestamp.

Помилки/виключення

Під час збоїв буде видаватись E_WARNING.

Приклади

Приклад #1 A filectime() example

<?php

// outputs e.g. somefile.txt was last changed: December 29 2002 22:16:23.

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

?>

Примітки

Зауваження:

Note: In most Unix filesystems, a file is considered changed when its inode data is changed; that is, when the permissions, owner, group, or other metadata from the inode is updated. See also filemtime() (which is what you want to use when you want to create "Last Modified" footers on web pages) and fileatime().

Зауваження:

Note also that in some Unix texts the ctime of a file is referred to as being the creation time of the file. This is wrong. There is no creation time for Unix files in most Unix filesystems.

Зауваження:

Варто зауважити, що точність часових міток у різних файлових систем може бути різна.

Зауваження: Рузультати цієї функції кешуються. Докладніше: clearstatcache().

Підказка

Починаючи з PHP 5.0.0, ця функція також може бути використана з деякими URL-обгортками. На сторінці Підтримувані протоколи та обгортки вказано, які обгортки підтримують сімейство функцій stat().

Прогляньте також

add a note

User Contributed Notes 9 notes

up
14
StevieMc at example dot com
18 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
9 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
3
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
17 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
m dot rabe at directbox dot com
14 years ago
Under Windows you can use fileatime() instead of filectime().
up
0
soapergem at gmail dot com
15 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
0
chuck dot reeves at gmail dot com
17 years ago
filectime running on windows reading a file from a samba share, will still show the last modified date.
up
-1
laurent dot pireyn at wanadoo dot be
23 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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