PHP

Write Bytes to a Remote SFTP File (BinData)

Demonstrates the Chilkat SFtp.WriteFileBd method, which appends all bytes in a BinData to the remote file identified by an open handle. The first argument is the handle and the second is the BinData.

Note: This example uses a relative local path, which is resolved against the application's current working directory. Absolute local paths may also be used. Supply the path appropriate to your own environment.

Background: This is the binary counterpart to WriteFileText — the right choice for images, archives, or any non-text content, where a charset conversion would corrupt the data. Combined with an appropriate OpenFile disposition it can create, overwrite, or append; here the file is created/truncated first so the result is exactly the BinData contents.

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<?php

use Chilkat2\BinData;
use Chilkat2\SFtp;

// Demonstrates the SFtp.WriteFileBd method, which appends all bytes in a BinData to the remote
// file identified by an open handle.  The 1st argument is the handle and the 2nd is the BinData.

$sftp = new SFtp();

// Connect, authenticate, and initialize the SFTP subsystem.
$port = 22;
try {
    $sftp->Connect('sftp.example.com', $port);

    // 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';

    $sftp->AuthenticatePw('mySshLogin', $password);

    $sftp->InitializeSftp();

    // Open (creating/truncating) the remote file for writing.
    $handle = $sftp->OpenFile('subdir/image.png', 'writeOnly', 'createTruncate');

    // Put the bytes to write into a BinData.  (Here they are loaded from a local file, but the
    // bytes could come from anywhere.)
    $bd = new BinData();
    $bd->LoadFile('qa_data/image.png');

    // Append the BinData bytes to the open remote file.
    $sftp->WriteFileBd($handle, $bd);

    $sftp->CloseHandle($handle);
} catch (\Chilkat2\Exception $e) {
    echo $e->getMessage(), "\n";
    exit;
}

echo 'Wrote ', $bd->NumBytes, " bytes.\n";

$sftp->Disconnect();