<?php
include('Net/SFTP.php');

$sftp = new Net_SFTP('106.14.1.181');
if (!$sftp->login('10000004000', 'YRATF0OtDaYa2Uhv6cWO8BV9FPBup5')) {
    exit('Login Failed');
}
// 获取前一天的对账单
// target remote
$target_folder = str_replace("-", "/", date("/Y-m", strtotime("-1 day")) );
$file_list = array_values(array_diff($sftp->nlist($target_folder), array(".","..")));
// target local
$target_local = "statement_files" . $target_folder;
if ( ! is_dir($target_local)) {
    mkdir($target_local, 0777);
}
// local files
$local_files = array_values(array_diff(scandir($target_local), array('.', '..')));
// new files
$new_files = array_values(array_diff($file_list, $local_files));
// copies filename.remote to filename.local from the SFTP server
$new_cnt = 0;
foreach ($new_files as $key => $new) {
    $file_path = $target_folder . "/" . $new;
    $sftp->get($file_path, $target_local . "/" . $new);
    $new_cnt++;
}
echo "Copied new statements count: " . $new_cnt;