PHP Extension

Set a Remote FTP File's Last-Modified Time

Demonstrates the Chilkat Ftp2.SetRemoteFileDateTimeStr method, which sets the last-modified time of a remote file. The first argument is an RFC 822 date-time string and the second is the remote filename.

Background: An upload normally leaves the remote file stamped with the time it arrived, which loses the original modification time — a problem for backups, mirrors, and timestamp-based sync. This method restores it, and Chilkat converts the supplied time to UTC before sending a server-supported command (typically MFMT). Whether it is honored depends on the server implementing such a command and granting permission.

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PHP Extension

<?php

include("chilkat.php");

$success = false;

//  Demonstrates the Ftp2.SetRemoteFileDateTimeStr method, which sets the last-modified time of a
//  remote file.  The 1st argument is an RFC 822 date-time string and the 2nd is the remote
//  filename.

$ftp = new CkFtp2();

$ftp->put_Hostname('ftp.example.com');
$ftp->put_Username('myFtpLogin');

//  Normally you would not hard-code the password in source.  You should instead obtain it
//  from an interactive prompt, environment variable, or a secrets vault.
$ftp->put_Password('myPassword');

$success = $ftp->Connect();
if ($success == false) {
    print $ftp->lastErrorText() . "\n";
    exit;
}

//  Chilkat converts the date to UTC and sends a server-supported timestamp-setting command.
$success = $ftp->SetRemoteFileDateTimeStr('Fri, 10 Jul 2026 20:15:30 -0600','public_html/report.pdf');
if ($success == false) {
    print $ftp->lastErrorText() . "\n";
    exit;
}

print 'Remote file timestamp set.' . "\n";

$success = $ftp->Disconnect();
if ($success == false) {
    print $ftp->lastErrorText() . "\n";
    exit;
}


?>