Copy Files from the Server using FTP in php

Code:
&lt;?php



$ftp_server    = "example.com";

$ftp_user_name = "username";

$ftp_user_pass = "password";



$local_dir = 'images/';

$dh        = opendir($local_dir);



if($dh){

    $conn_id      = ftp_connect($ftp_server);

    $login_result = ftp_login($conn_id, $ftp_user_name, $ftp_user_pass);

    

    $contents = ftp_nlist($conn_id, "ftp_img/");

    

    foreach($contents as $remote_file){

    $basename = basename($remote_file);

            

        if(!file_exists($local_dir.$basename)){

            $handle = fopen($local_dir.$basename, 'w');

            if (ftp_fget($conn_id, $handle, $remote_file, FTP_ASCII, 0))

                echo "successfully written to $local_dir$basename\n<br/>";

            else

                echo "There was a problem while downloading $remote_file to $local_file\n<br/>";

            fclose($handle);

        

        }else{

            $remote_filesize = ftp_size($conn_id,$remote_file);

            $local_filesize  = filesize($local_dir.$basename);

            

            if($remote_filesize != $local_filesize){

                $handle = fopen($local_dir.$basename, 'w');

                if (ftp_fget($conn_id, $handle, $remote_file, FTP_ASCII, 0))

                    echo "successfully written to $local_dir$basename\n<br/>";

                else

                    echo "There was a problem while downloading $remote_file to $local_file\n<br/>";

                fclose($handle);

                

            }else{

                echo 'You have already the <strong>filename</strong>: 

                     <font color="blue">'.$basename.'</font> with <strong>Filesize</strong>: 

                     <font color="blue">'.$remote_filesize.'</font><br/>';

            }

        } 

    }

    ftp_close($conn_id);

}

closedir();

?&gt;