getlastmod

(PHP 4, PHP 5)

getlastmod — Retourne la date de dernière modification de la page

Description

int getlastmod ( void )

Retourne la date de dernière modification de la page.

Si vous voulez récupérer la date de la dernière modification d'un fichier différent, utilisez la fonction filemtime().

Valeurs de retour

Retourne la date de dernière modification de la page. La valeur retournée est un timestamp UNIX, utilisable comme paramètre avec la fonction date(). Retourne FALSE si une erreur survient.

Exemples

Exemple #1 Exemple avec getlastmod()


<?php
// affiche par exemple 'Dernière modification: April 20 2004 20:43:59.'
echo "Dernière modification : " . date ("F d Y H:i:s.", getlastmod());
?>

Voir aussi

getmygid

getenv

Last updated: Fri, 20 Jun 2008

add a note User Contributed Notes
getlastmod

rwruck
17-Oct-2004 03:28


DO NOT use this function unless you are absolutely sure both your Apache and PHP have been compiled with the same value for -DFILE_OFFSET_BITS.



If not, this function will return the access time (or maybe even garbage) instead of the modification time due do Apache and PHP using different versions of the stat structure.



This is true regardless of Apache and PHP version.



To be on the safe side, always use the workaround already posted below:

filemtime($_SERVER['SCRIPT_FILENAME'])

19-May-2004 01:36


Setting the 'Last-Modified' header:

<?php

setlocale(LC_TIME, "C");

$ft = filemtime ('referencefile');

$localt = mktime ();

$gmtt = gmmktime ();

$ft = $ft - $gmtt + $localt;

$modified = strftime ("%a, %d %b %Y %T GMT", $ft);

?>

timeflys at users dot sourceforget dot net
20-Mar-2003 10:28


I found issues using getlastmod() to test whether or not I was successful in setting the Last Modified date in the header. The code below shows the same Last Modified date before and after I set the Last-Modified header.



=====getlastmod



<?

//True modified date

$modified = date ("F d Y H:i:s.", getlastmod());

    

//artificial modified date - sent to header

$last_modified = gmdate('D, d M Y H:i:s T', (time() - 43200));

     

//caching prevention

header("Last-Modified: $last_modified GMT");

header("Cache-Control: no-store, no-cache, must-revalidate");  // HTTP/1.1

header("Cache-Control: post-check=0, pre-check=0", false);

    header("Pragma: no-cache");                          // HTTP/1.0



$getlast_modified = date ("F d Y H:i:s.", getlastmod());



print "True modified date(Before): $modified <p /> Date sent to header(After): $getlast_modified";

?>



I then used the PEAR, HTTP_Request class which worked, the Last-Modified date updates everytime it is requested, the desired effect.



======HTTP_Request

<?

require 'HTTP/Request.php';

$r = new HTTP_Request('http://www.sample.com/page.php');

$r->sendRequest();

$response_headers = $r->getResponseHeader();

print $response_headers["last-modified"];

?>

Richard Anderson(r85anderson at yahoo dot com)
17-Nov-2002 10:33


for includes....



<?

//include.php

$file = __FILE__;

$lastmod = date("M d, Y @ h:ia", filemtime($file));

?>



<?

//footer.php

echo("page last modified: $lastmod");

?>

kworthington ([no@spam)] linuxmaildotorg
04-Oct-2002 12:33


I was just informed of a workaround for the Apache 2.0 issue, do:

echo "Last modified: " . date("D F d Y h:i:s A", filemtime($_SERVER["SCRIPT_FILENAME"]));

Thanks to: Edward S. Marshall

add a note

getmygid

getenv

Last updated: Fri, 20 Jun 2008