This tutorial will help you to enable SSH2 in PHP.
1) Download and install libssh2.
wget http://www.libssh2.org/download/libssh2-1.5.0.tar.gz tar zxvf libssh2-1.5.0.tar.gz cd libssh2-1.5.0 ./configure --enable-shared --with-gnu-ld make make install
3) Download and install ssh2.
wget https://pecl.php.net/get/ssh2-0.12.tgz tar zxvf ssh2-0.12.tgz cd ssh2-0.12 phpize ./configure --with-ssh2 make make install
3) Enable ssh2 extension in PHP.
echo "extension=ssh2.so" >> /usr/local/php/php.ini
4) Check if its enabled properly.
php -i |grep ssh
OUTPUT
Registered PHP Streams => https, ftps, compress.zlib, compress.bzip2, php, file, glob, data, http, ftp, phar, zip, ssh2.shell, ssh2.exec, ssh2.tunnel, ssh2.scp, ssh2.sftp libssh2 version => 1.5.0 banner => SSH-2.0-libssh2_1.5.0 CVS_RSH => ssh _SERVER["CVS_RSH"] => ssh