PHP FTP Form

<?php
$fastdl_server = '#####';
$fastdl_user = '#####';
$fastdl_pass = '#####';

// Set up basic connection
$fastdl_id = ftp_connect($fastdl_server);

// Login with username and password
$fastdl_login_result = ftp_login($fastdl_id, $fastdl_user, $fastdl_pass);

// Get the file list for /
$fastdl_buff = ftp_nlist($fastdl_id, '/not real path ive copied it out/inversion/fastdl/cache/garrysmod/cache');

// Create the date array
$fastdl_date = array((count($fastdl_buff) - 1));

// Put the dates in the date array
for($i =0; $i < count($fastdl_buff); $i++){
    $buff = ftp_mdtm($fastdl_id, '/not real path ive copied it out/inversion/fastdl/cache/cache/'.$fastdl_buff[$i]);
    $fastdl_date[$i] = $buff;
}

// Finds newest date and puts the corrosdponding array number into variable
$fastdl_newest_date = array_search(max($fastdl_date),$fastdl_date);
$fastdl_newest_file = $fastdl_buff[$fastdl_newest_date];

// Checks if the file exists locally.
if(file_exists('/not real path ive copied it out/inversion/fastdl/cache/'.$fastdl_newest_file)){ echo 'Cache is fine!'; }

// Clears out the local folder. FTPs newest file down. Clears out the FTP dir.
else{
    for($i =0; $i < count($fastdl_buff); $i++){
        if($i != $fastdl_newest_date){ftp_delete($fastdl_id,'/not real path/garrysmod/cache/'.$fastdl_buff[$i]);}
        }
    echo 'Cleared out the FTP apart from newest file.<br/>';
    ftp_get($fastdl_id, '/not real path ive copied it out/inversion/fastdl/cache/'.$fastdl_newest_file, '/not real path/garrysmod/cache/'.$fastdl_newest_file, FTP_BINARY);
    echo 'Updated the cache!';
    }


// close the connection
ftp_close($fastdl_id);

?>