(PHP Extension) SFTP Fsync -- Flush an Open File on the Server

Demonstrates how to flush the contents of an open file on the server. This example only works for servers that implement the fsync@openssh.com extension.

Note: This example requires Chilkat v9.5.0.71 or later.

Chilkat PHP Downloads PHP Extension for Windows, Linux, MacOS, Alpine Linux, Solaris

<?php

// The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number.
// For example, if using Chilkat v9.5.0.48, then include as shown here:
include("chilkat_9_5_0.php");

// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

$sftp = new CkSFtp();

// Pass a domain or IP address..
$success = $sftp->Connect('my-sftp-server.com',22);
if ($success == true) {
    $success = $sftp->AuthenticatePw('mySFtpLogin','mySFtpPassword');
}

if ($success == true) {
    $success = $sftp->InitializeSftp();
}

if ($success != true) {
    print $sftp->lastErrorText() . "\n";
    exit;
}

// Open a file on the server for writing.
$handle = $sftp->openFile('myTest.txt','writeOnly','createTruncate');
if ($sftp->get_LastMethodSuccess() != true) {
    print $sftp->lastErrorText() . "\n";
    exit;
}

// Write some text to the file:
$success = $sftp->WriteFileText($handle,'ansi','abcdefghijklmnopqrstuvwxyz');
if ($success != true) {
    print $sftp->lastErrorText() . "\n";
    exit;
}

// Make sure the server flushes what we wrote to the disk..
// (this is requires a server that implements the fsync@openssh.com SFTP protocol extension)
$success = $sftp->Fsync($handle);
if ($success != true) {
    print $sftp->lastErrorText() . "\n";
    exit;
}

// ....
// ....

$success = $sftp->WriteFileText($handle,'ansi','ABCDEFGHIJKLMNOPQRSTUVWXYZ');
if ($success != true) {
    print $sftp->lastErrorText() . "\n";
    exit;
}

// Close the file.
$success = $sftp->CloseHandle($handle);
if ($success != true) {
    print $sftp->lastErrorText() . "\n";
    exit;
}

print 'Success.' . "\n";

?>