php ssh2:
1. wget http://www.libssh2.org/download/libssh2-1.4.3.tar.gz
./configure && make && make install
2. wget http://pecl.php.net/get/ssh2-1.1.2.tgz
phpize && ./configure --with-ssh2
make && make install
cp modules/ssh2.so /usr/local/php/lib/php/extensions/no-debug-non-zts-20060613/ echo "extension=ssh2.so" >> /usr/local/php/etc/php.ini
参考：
https://www.jianshu.com/p/53e84ed71c55
http://pecl.php.net/package/ssh2
https://blog.csdn.net/Watson2016/article/details/52474001
https://www.cnblogs.com/wangzahngjun/p/5121945.html