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PHP Extension Examples

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(PHP Extension) Secure FTP with Client Certificate

Chilkat FTP2 provides the ability to use a client certificate with secure FTP (implicit or explicit SSL/TLS). This example demonstrates how to load a certificate from a .pfx and use it as the client-side SSL cert. Note: Client-side certificates are only needed in situations where the server demands one.

Chilkat PHP Downloads

PHP Extension for Windows, Linux, MAC OS X,
Alpine Linux, Solaris, OpenBSD, FreeBSD,
and Linux armhf/aarch64

<?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 requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

$ftp = new CkFtp2();

$ftp->put_Hostname('ftp.***.com');
$ftp->put_Port(21);
$ftp->put_Username('test');
$ftp->put_Password('test');

// This example will use explict TLS/SSL.
// Establish an explicit secure channel after connection
// on the standard FTP port 21.
$ftp->put_AuthTls(true);

// The Ssl property is for establishing an implicit SSL connection
// on port 990.  Because this example uses explicit SSL, it 
// should remain false.
$ftp->put_Ssl(false);

// Load a certificate from a .pfx
// A PFX may contain several certs, including the certificates
// in a chain of authority.
$certStore = new CkCertStore();

$password = '***';
// Load the certs from a PFX into an in-memory certificate store:
$success = $certStore->LoadPfxFile('chilkat.pfx',$password);
if ($success != true) {
    print $certStore->lastErrorText() . "\n";
    exit;
}

// Find the exact cert we'll use:

// cert is a CkCert
$cert = $certStore->FindCertBySubject('Chilkat Software, Inc.');
if ($certStore->get_LastMethodSuccess() == false) {
    print 'Certificate not found!' . "\n";
    exit;
}

// Use this certificate for our secure (SSL/TLS) connection:
$success = $ftp->SetSslClientCert($cert);

// Connect and login to the FTP server.  The connection is 
// made secure because of the AuthTls setting.
$success = $ftp->Connect();
if ($success != true) {
    print $ftp->lastErrorText() . "\n";
    exit;
}
else {
    // LastErrorText contains information even when
    // successful. This allows you to visually verify
    // that the secure connection actually occurred.
    print $ftp->lastErrorText() . "\n";
}

print 'Secure FTP Channel Established!' . "\n";

// Do whatever you're doing to do ...
// upload files, download files, etc...

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

$success = $ftp->Disconnect();

?>

 

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