php远程copy文件以及在远程服务器中执行命令时，所用到的模块是ssh2，以后所有的操作都依据ssh2连接句柄完成。
libssh: https://www.libssh2.org/
ssh2: https://pecl.php.net/package/ssh2
[安装]
wget http://www.libssh2.org/download/libssh2-1.4.2.tar.gz
tar zxf libssh2-1.4.2.tar.gz
cd libssh2-1.4.2
./configure && make && make install
wget https://pecl.php.net/get/ssh2-1.1.2.tgz
cd ssh2-0.11.3
phpize
./configure —with-ssh2 && make && make install
ubuntu安装:
apt-get install libssh2-1-dev libssh2-php
会直接安装, 不需要修改PHP配置信息
[修改配置文件]
cd /etc/php5/cli
vim php.ini
添加项：extension=/usr/lib/php5/20090626/ssh2.so
ssh2.so是编译ssh2时得到的模块，上面是模块的位置。
查看是否加载了ssh2
[使用]
SSH2连接有两种方式，分别是用户名密码，ssh密钥形式。
1.用户名和密码
$connection = ssh2_connect("192.168.6.222",22);
if (ssh2_auth_password($connection,"veno","ubuntu"))
{
echo "Authentication Successful! ";
}else{
die("Authentication Failed...");
}2.ssh密钥
v$connection = ssh2_connect('192.168.6.222', 22, array('hostkey'=>'ssh-rsa'));
if (ssh2_auth_pubkey_file($connection, 'root',
'/root/.ssh/id_rsa.pub',
'/root/.ssh/id_rsa'))
{
echo "Public Key Authentication Successful\n";
} else {
echo ('Public Key Authentication Failed');
}密钥生成方式:
ssh-keygen -t rsa
生成后的公钥: ~/.ssh/id_rsa.pub
然后使用ssh-copy-id的方式添加到需要免密登录的服务器上
3.远程copy文件
远程服务器文件copy到本地:
bool ssh2_scp_recv ( resource $session, string $remote_file, string $local_file )
Ps: 接收文件时，后面文件名可以为空，如：
ssh2_scp_recv($connection, '/home/xiaozl/veno1.exe', '/home/xiaozl/')
本地文件copy到远程服务器
bool ssh2_scp_send ( resource $session, string $local_file, string $remote_file [, int $create_mode] )
Ps:发送文件时，后面的文件名不能为空，如：
ssh2_scp_send($connection, '/home/xiaozl/package.xml', '/home/xiaozl/package.xml');
4.执行远程服务器上的命令并取返回值
resource ssh2_exec( resource $session, string $command [, string $pty [, array $env [, int $width [, int $height [, int $width_height_type]]]]] )
在229上面执行222上的命令具体实例:
$tcmd="cd /home/veno/gateway/radiusclient;";
$tcmd.="./nastool.sh get-status app=2b1c5364-db39-c76d-842c-11d4a81d555d";
$stream = ssh2_exec($connection, $tcmd);
stream_set_blocking($stream,true);
echo stream_get_contents($stream);
ssh2_exec() 是会有返回值的，而它的返回值是无格式的（无换行），但它是以stream（流的形式返回），
显示出来，可这样进行流处理：
stream_set_blocking($stream, true);
echo :stream_get_contents($stream);
DEMO:
echo "是访问到这里来了";
$connection = ssh2_connect('192.168.6.222', 22, array('hostkey'=>'ssh-rsa'));
if (ssh2_auth_pubkey_file($connection, 'root',
'/root/.ssh/id_rsa.pub',
'/root/.ssh/id_rsa'))
{
echo "Public Key Authentication Successful\n";
//$flag=ssh2_scp_recv($connection, '/home/xiaozl/veno1.exe', '/home/xiaozl/');
//接收时，后面文件名可以为空
//$flag=ssh2_scp_send($connection, '/home/xiaozl/package.xml', '/home/xiaozl/package.xml');
//发送时，后面的文件名不能为空
//echo $flag;
$tcmd="cd /home/veno/gateway/radiusclient;";
$tcmd.="./nastool.sh get-status app=2b1c5364-db39-c76d-842c-11d4a81d555d";
$stream = ssh2_exec($connection, $tcmd);
stream_set_blocking($stream,true);
echo stream_get_contents($stream);
} else {
echo ('Public Key Authentication Failed');
}
echo "
";
$connection = ssh2_connect('192.168.6.222', 22);
ssh2_auth_password($connection, 'veno', '*******');
$tcmd="cd /home/veno/gateway/radiusclient;";
$tcmd.="./nastool.sh get-status app=2b1c5364-db39-c76d-842c-11d4a81d555d";
$stream = ssh2_exec($connection, $tcmd);
echo "
";
echo "-----------------------------------------------";
stream_set_blocking($stream,true);
echo stream_get_contents($stream);
echo "-----------------------------------------------";
echo "
";
