PHP ActiveX

Clear the SFTP Session Log

Demonstrates the Chilkat SFtp.ClearSessionLog method, which clears the in-memory text stored in the SessionLog property. It takes no arguments.

Background: With session logging enabled, the SessionLog accumulates a running record of the session's activity that is invaluable for diagnosing a failed transfer. Over a long-lived session that log grows unbounded, so clearing it frees memory — and, more usefully, lets you capture the log for one specific operation in isolation by clearing it just before and reading it just after.

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<?php

$success = 0;

//  Demonstrates the SFtp.ClearSessionLog method, which clears the in-memory text stored in the
//  SessionLog property.  It takes no arguments.

$sftp = new COM("Chilkat.SFtp");

//  Connect, authenticate, and initialize the SFTP subsystem.
$port = 22;
$success = $sftp->Connect('sftp.example.com',$port);
if ($success == 0) {
    print $sftp->LastErrorText . "\n";
    exit;
}

//  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.
$password = 'mySshPassword';

$success = $sftp->AuthenticatePw('mySshLogin',$password);
if ($success == 0) {
    print $sftp->LastErrorText . "\n";
    exit;
}

$success = $sftp->InitializeSftp();
if ($success == 0) {
    print $sftp->LastErrorText . "\n";
    exit;
}

//  When KeepSessionLog is enabled, the SessionLog property accumulates a record of the session's
//  activity, which is useful for debugging.
$sftp->KeepSessionLog = 1;

//  ... perform operations ...

//  Clear the accumulated log, for example before starting a new logical operation whose log you
//  want to capture in isolation.
$sftp->ClearSessionLog();
print 'Session log cleared.' . "\n";

$sftp->Disconnect();

?>