How to SFTP upload files from PHP

I'm having trouble using PHP to SFTP upload files to a remote server. When I use cURL, I'm getting the error described here:

SFTP from PHP - undefined constant CURLOPT_PROTOCOLS and CURLPROTO_SFTP?

I also tried phpseclib as suggested in:

SFTP from within PHP

But when i try phpseclib, i get these errors:

Warning: require_once(Math/BigInteger.php) [function.require-once]: failed to open stream: No such file or directory in /home/john/public_html/test/Net/SSH2.php on line 53

Fatal error: require_once() [function.require]: Failed opening required 'Math/BigInteger.php' (include_path='.:/usr/share/php:/usr/share/pear') in /home/john/public_html/test/Net/SSH2.php on line 53

I then tried using system commands in php like so, but nothing happened:

<?php
echo system('sftp user@ftp.domain.com');
echo system('password');
echo system('put file.csv');
?>

I also tried

<?php
$connection = ssh2_connect('shell.example.com', 22);
ssh2_auth_password($connection, 'username', 'password');

ssh2_scp_send($connection, '/local/filename', '/remote/filename', 0644);
?>

but my php server says ss2_connect is not defined.

I tried to do the following from terminal

scp file.csv user@ftp.remote.com
password

But the server does not allow scp command. I do not have sh开发者_如何学Cell access to create ssh keys.

All i can do right now is sftp from terminal and manually upload. But I really want to automate this so a PHP website can do all this.

There aren't many tutorials on how to SFTP upload from PHP. Is it because it's a bad thing to do? If so, what should I be doing? The server I want to upload to only allows sftp connections.

http://phpseclib.sourceforge.net/documentation/intro.html#intro_usage_correct

Per that, phpseclib's root directory needs to be in your include_path. From that page:

<?php
  set_include_path(get_include_path() . PATH_SEPARATOR . 'phpseclib');

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

You should really familiarize yourself with this kind of include technique - it's pretty standard for PEAR libraries and Zend ones.

but my php server says ss2_connect is not defined.

For this error, you should install ssh2 extension on your server's php.

Use the built in SSH library. Using the scp function will be easier than initiating a sftp session too.

http://www.php.net/manual/en/function.ssh2-scp-send.php

To use system command you have to:

1. Configure password-less ssh
2. Run command like scp filename1 userid@hostname:filename2, check man scp. You can do the same with sftp but with some other options

You can use Pure-PHP implementation of SSHv2 library.

Here are some examples of how to use this library:

<?php
include 'vendor/autoload.php';
$ssh = new \phpseclib\Net\SSH2('www.domain.tld');
if (!$ssh->login('username', 'password')) {
    exit('Login Failed');
}
echo $ssh->exec('pwd');
echo $ssh->exec('ls -la');
?>

And:

<?php
include 'vendor/autoload.php';
$key = new \phpseclib\Crypt\RSA();
//$key->setPassword('whatever');
$key->loadKey(file_get_contents('privatekey'));
$ssh = new \phpseclib\Net\SSH2('www.domain.tld');
if (!$ssh->login('username', $key)) {
    exit('Login Failed');
}
echo $ssh->read('username@username:~$');
$ssh->write("ls -la\n");
?>