sudo apt-get install libssh2-1-dev sudo pecl install channel://pecl.php.net/ssh2-0.12 echo ‘extension=ssh2.so‘ | sudo tee /etc/php5/cli/conf.d/50-ssh2.ini
添加 php ssh2扩展
原文：http://my.oschina.net/u/2269208/blog/417521
