SunshinePHP Developer Conference 2015

filectime

(PHP 4, PHP 5)

filectimeGets inode change time of file

Descrierea

int filectime ( string $filename )

Gets the inode change time of a file.

Parametri

filename

Path to the file.

Valorile întoarse

Returns the time the file was last changed, sau FALSE în cazul eșecului. The time is returned as a Unix timestamp.

Exemple

Example #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));
}

?>

Erori/Excepții

În cazul eșecului este emis un E_WARNING.

Note

Notă:

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().

Notă:

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.

Notă:

Observați că rezoluția timpului poate să difere de la un sistem de fișiere la altul.

Notă: Rezultatele acestei funcții sunt stocate în cache. Accesați clearstatcache() pentru mai multe detalii.

Sfat

Începând cu PHP 5.0.0 această funcție poate fi utilizată de asemenea cu unele învelișuri URL. Referiți-vă la Supported Protocols and Wrappers pentru a determina care învelișuri susțin familia de funcționalitate stat().

Vedeți de asemenea

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User Contributed Notes 8 notes

up
2
soapergem at gmail dot com
5 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
coolkoon at gmail dot com
3 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
javi at live dot com
5 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
1
chuck dot reeves at gmail dot com
7 years ago
filectime running on windows reading a file from a samba share, will still show the last modified date.
up
1
StevieMc at example dot com
7 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
0
m dot rabe at directbox dot com
4 years ago
Under Windows you can use fileatime() instead of filectime().
up
0
website at us dot kaspersky dot com
7 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
0
laurent dot pireyn at wanadoo dot be
13 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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