Downloading and Uploading Files Over SFTP with PHP and SSH2

This is a code I used today to connect my customer SFTP server to download his Dialer leads file . SSH2 PHP extension needed to be installed and enabled in php.ini file .

1 - Install the prerequisites 

        yum install gcc php-devel php-pear libssh2 libssh2-devel make

2 - Install the SSH2 extension 

        pecl install -f ssh2

3 - Enable it in php.ini

        echo extension=ssh2.so >> /etc/php.ini

4 - Restart apache

        service httpd restart

- Connecting and Uploading File to SFTP using SSH2 extension 

$server = '192.168.0.100';

$port = '22222';

$username = 'MYSFTPUSER';

$password = 'MYSFTPPASSWORD';

// connect

$connection = ssh2_connect($server, $port);

        if (ssh2_auth_password($connection, $username, $password)) {

                // initialize sftp

                $sftp = ssh2_sftp($connection);

                // Upload file

                echo "Connection successful, uploading file now..."."\n";

                $file = 'omid.txt';

                $contents = file_get_contents($file);

                file_put_contents("ssh2.sftp://{$sftp}/MyRemoteHomeFolder/{$file}", $contents);

        } else {

                echo "Unable to authenticate with server"."\n";

}

- Downloading all  files from SFTP using SSH2 extension 

 $sftpconnection = ssh2_connect($sftpserver, $sftpport);

          if (!ssh2_auth_password($sftpconnection, $sftpusername, $sftppassword)) throw new Exception('Unable to connect.');

           // Create our SFTP resource

          if (!$sftp = ssh2_sftp($sftpconnection)) throw new Exception('Unable to create SFTP connection.');

          $localDir  = '/usr/local/src/downloads/';

          $remoteDir = '/myremotefolder/';

          $files = scandir('ssh2.sftp://' . $sftp . $remoteDir);

          if (!$dir = opendir("ssh2.sftp://$sftpconnection$remoteDir"))

                die('Failed to open the directory.');

          if (!$remote = fopen("ssh2.sftp://$sftpconnection$remoteDir$file", 'r'))

          {

                  die("Failed to open remote file: $file\n");

          }

          if (!$local = fopen($localDir . $file, 'w'))

          {

             die("Failed to create local file: $file\n");

             break;

          }

         $read = 0;

         $filesize = filesize("ssh2.sftp://$sftpconnection/$remoteDir$file");

          while ( ($read < $filesize) && ($buffer = fread($remote, $filesize - $read)) )

         {

           $read += strlen($buffer);

           if (fwrite($local, $buffer) === FALSE)

         {

             echo "Failed to write to local file: $file\n";

             break;

         }

         }

         fclose($local);

         fclose($remote);