fileatime
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".
filectime
(PHP 4, PHP 5)
filectime — Obtém o tempo de modificação do inode do arquivo
Descrição
int filectime
( string $nomedoarquivo
)
Obtém o tempo de modificação do inode do arquivo.
Parâmetros
- filename
-
Caminho para o arquivo.
Valor Retornado
Retorna o tempo que o arquivo foi modificado, ou FALSE no caso de um erro. O tempo é retornado como um Unix timestamp.
Exemplos
Exemplo #1 Exemplo da filectime()
<?php
// Exibe algo como: arquivo.txt foi modificado em: December 29 2002 22:16:23.
$filename = 'arquivo.txt';
if (file_exists($filename)) {
echo "$filename foi modificado em: " . date ("F d Y H:i:s.", filectime($filename));
}
?>
Notas
Nota:
Nota: Em muitos sistemas de arquivos Unix, um arquivo é considerado modificado quando seus dados de inode é modificado; isto é, quando as permissões, proprietário, grupo ou outras metadata do inode é atualizada. Veja também filemtime() (que é o que você quer usar quando você quer criar rodapé "Last Modified" em páginas web) e fileatime().
Nota:
Note também que em alguns textos de Unix o ctime de um arquivo é referenciado como sendo o tempo de criação do arquivo. Isto é errado. Não há tempo de criação para arquivos Unix em muitos sistemas de arquivos Unix.
Nota: O resultado desta função é cacheada. Veja clearstatcache() para mais detalhes.
Dica
A partir do PHP 5.0.0, esta função também pode ser utilizada com alguns wrappers URL. Veja Supported Protocols and Wrappers para uma lista de quais wrappers são suportados pela família de funções stat().
add a note
User Contributed Notes
filectime
coolkoon at gmail dot com
23-Jan-2011 02:42
m dot rabe at directbox dot com
06-Jan-2010 06:07
Under Windows you can use fileatime() instead of filectime().
soapergem at gmail dot com
05-Sep-2009 09:19
Note that on Windows systems, filectime will show the file creation time, as there is no such thing as "change time" in Windows.
javi at live dot com
03-Feb-2009 02:15
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;
}
?>
rich at rmbwebs dot com
11-Mar-2008 12:07
This is a modification of simraLIAS at mac dot com's code.
Modification dates should not be used for keys in an array when sorting by date because there is no guarantee that all files will have different dates. Collisions resulting in files missing from the list could be possible. A better way is to use the filename as the key (guaranteed to not be collisions)
<?php
foreach (glob("../downloads/*") as $path) { //configure path
$docs[$path] = filectime($path);
} asort($docs); // sort by value, preserving keys
foreach ($docs as $path => $timestamp) {
print date("d. M. Y: ", $timestamp);
print '<a href="'. $path .'">'. basename($path) .'</a><br />';
}
?>
simraLIAS at mac dot com
30-Nov-2007 03:24
This is another way to get a list of files ordered by upload time:
<?php
foreach (glob("../downloads/*") as $path) { //configure path
$docs[filectime($path)] = $path;
} ksort($docs); // sort by key (timestamp)
foreach ($docs as $timestamp => $path) {
print date("d. M. Y: ", $timestamp);
print '<a href="'. $path .'">'. basename($path) .'</a><br />';
}
?>
chuck dot reeves at gmail dot com
02-Oct-2007 09:14
filectime running on windows reading a file from a samba share, will still show the last modified date.
website at us dot kaspersky dot com
31-Aug-2007 10:51
Line 37 of the code above has an error.
echo "File name: $file - Date Added: $date. <br/>"";
There is an extra " after the <br/> that needs to be deleted in order for this code to work.
StevieMc at example dot com
15-Nov-2006 06:28
This method gets all the files in a directory, and echoes them in the order of the date they were added (by ftp or whatever).
<?PHP
function dirList ($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.
gyrbo[at]yahoo[dot]com
21-Sep-2002 04:35
filectime doesn't seem to be working properly on Win32 systems (it seems to return the creation time). Try using filemtime if you have problems.
laurent dot pireyn at wanadoo dot be
27-Sep-2001 05:01
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.