如何从PHP上传SFTP文件(How to SFTP upload files from PHP)

 我在使用PHP来SFTP上传文件到远程服务器时遇到了麻烦。 当我使用cURL时，我收到此处描述的错误： 
 
 来自PHP的SFTP - 未定义的常量CURLOPT_PROTOCOLS和CURLPROTO_SFTP？ 
 
 我也按照以下建议尝试了phpseclib： 
 
 PHP中的SFTP 
 
 但是，当我尝试phpseclib时，我得到这些错误： 
 
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
 
 然后我尝试在php中使用系统命令，但没有任何反应： 
 
<?php
echo system('sftp user@ftp.domain.com');
echo system('password');
echo system('put file.csv');
?>
 
 我也试过了 
 
<?php
$connection = ssh2_connect('shell.example.com', 22);
ssh2_auth_password($connection, 'username', 'password');

ssh2_scp_send($connection, '/local/filename', '/remote/filename', 0644);
?>
 
 但是我的php服务器说没有定义ss2_connect。 
 
 我试图从终端做以下事情 
 
scp file.csv user@ftp.remote.com
password
 
 但是服务器不允许使用scp命令。 我没有shell访问权限来创建ssh密钥。 
 
 我现在能做的就是从终端sftp并手动上传。 但我真的想自动化这个，所以PHP网站可以做到这一切。 
 
 关于如何从PHP上传SFTP的教程不多。 是因为这是一件坏事吗？ 如果是这样，我该怎么办？ 我要上传的服务器只允许sftp连接。 

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 shell 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.

原文：https://stackoverflow.com/questions/1767117