安装 SSH2 扩展

wget http://www.libssh2.org/download/libssh2-1.4.2.tar.gz
tar -xzvf  libssh2-1.4.2.tar.gz
cd libssh2-1.4.2
./configure --prefix=/usr/local/packagist/libssh2
make
make installCopy

# 建软连
ln -s /usr/local/Cellar/openssl/1.0.2p /usr/local/opensslCopy

./configure --prefix=/usr/local/libssh2 CPPFLAGS="-I/usr/local/openssl/include/" LDFLAGS="-L/usr/local/openssl/lib"Copy

## php7 安装ssh2 要指定版本1.0，否则会报错
# 一键安装
pecl install ssh2-1.0
# 编译安装，扩展包地址 http://pecl.php.net/get/ssh2-1.0.tgzCopy